Deep Sky Blue #00BFFF
Deep Sky Blue is a medium-light, vivid blue with hex code #00BFFF and RGB rgb(0, 191, 255).
Aa
Black text reads best on this color (9.89:1).
About this color
#00BFFF is a medium-light, vivid blue. In OKLCH its lightness is 76%, its chroma 0.153 and its hue 232°. Its hue sits on the cool side of the wheel. It is the named color Deep Sky Blue. Black text reads best on it, at 9.89:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Deep Sky Blue |
| Black text | 9.89:1 |
| White text | 2.12:1 |
Colors that go with Deep Sky Blue
Matches found by rotating Deep Sky Blue around the OKLCH hue wheel, each labelled with the closest name in our list.
Complementary
The opposite hue (180°).
Analogous
Neighbouring hues, 30° either side.
Triadic
Three hues spaced 120° apart.
Color palettes with Deep Sky Blue
Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Deep Sky Blue, closest first.
Similar named colors
The eight named colors closest to Deep Sky Blue, with their ΔE distance.
- Bright Sky Blue #02CCFE ΔE 0.037
- Vivid Sky Blue #4CC9F0 ΔE 0.047
- Lightblue #7BC8F6 ΔE 0.070
- Carolina Blue #8AB8FE ΔE 0.077
- Sky #82CAFC ΔE 0.078
- Aqua Blue #02D8E9 ΔE 0.085
- Turquoise Blue #06B1C4 ΔE 0.088
- Light Sky Blue #87CEFA ΔE 0.089
More about Deep Sky Blue
How to make Deep Sky Blue
A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.
- 4 parts white
- 3 parts blue
- 1 part pink
Recipe result: #75AFE7, a difference of ΔE 0.066 from Deep Sky Blue. That is close; add a little more of one paint to match.
Codes for Deep Sky Blue in every format
| HEX | #00BFFF |
| RGB | rgb(0, 191, 255) |
| HSL | hsl(195, 100%, 50%) |
| OKLCH | oklch(75.5% 0.153 231.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #00BFFF | 2.12:1 | Fails | Lc -45.5 | Large or bold text, headings |
| Black text on #00BFFF | 9.89:1 | AAA | Lc 63.1 | Content text, not long reading |
| #00BFFF text on white | 2.12:1 | Fails | Lc 40.9 | Non-text elements, placeholder text |
| #00BFFF text on black | 9.89:1 | AAA | Lc -61.4 | Content text, not long reading |
Shades and tints of Deep Sky Blue
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.
-
Step 50
50
#EDF7FD
oklch(97% 0.013 233.7)
-
Step 100
100
#D8EEF9
oklch(93.6% 0.028 229.2)
-
Step 200
200
#B7E0F7
oklch(88.5% 0.053 232.7)
-
Step 300
300
#7DCCF4
oklch(80.9% 0.096 231.7)
-
Step 400
400 (this color)
#00BFFF
oklch(75.5% 0.153 231.6)
-
Step 500
500
#0096C9
oklch(63.2% 0.128 231.5)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#005676
oklch(42.6% 0.087 232.3)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#002B3C
oklch(27.1% 0.054 230.4)
Deep Sky Blue with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #9EBDFF | 0.099 |
| Deuteranopia (no green cones) | #81A9FE | 0.084 |
| Tritanopia (no blue cones) | #00D0D5 | 0.088 |
| Achromatopsia (no color) | #B2B2B2 | 0.154 |
Use Deep Sky Blue in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.