#1BB8E5
Closest named color: Deep Sky Blue (#00BFFF). oklch(72.9% 0.133 224.3), rgb(27, 184, 229).
Aa
Black text reads best on this color (9.03:1).
About this color
#1BB8E5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.133 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.038 away. Black text reads best on it, at 9.03:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.03:1 |
| White text | 2.32:1 |
Values
| HEX | #1BB8E5 |
| RGB | rgb(27, 184, 229) |
| HSL | hsl(193, 80%, 50%) |
| OKLCH | oklch(72.9% 0.133 224.3) |
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 #1BB8E5 | 2.32:1 | Fails | Lc -50.2 | Large or bold text, headings |
| Black text on #1BB8E5 | 9.03:1 | AAA | Lc 58.7 | Large or bold text, headings |
| #1BB8E5 text on white | 2.32:1 | Fails | Lc 45.3 | Large or bold text, headings |
| #1BB8E5 text on black | 9.03:1 | AAA | Lc -56.8 | Large or bold text, headings |
Tints and shades
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
#EEF7FB
oklch(97.1% 0.011 226)
-
Step 100
100
#DAEEF6
oklch(93.7% 0.024 223.7)
-
Step 200
200
#B9E0F0
oklch(88.4% 0.046 224.7)
-
Step 300
300
#83CDE9
oklch(81% 0.083 224)
-
Step 400
400 (this color)
#1BB8E5
oklch(72.9% 0.133 224.3)
-
Step 500
500
#0098BF
oklch(63.2% 0.119 224.4)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495D
oklch(37.7% 0.071 223.8)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#1BB8E5 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) | #9FB4E7 | 0.102 |
| Deuteranopia (no green cones) | #86A2E4 | 0.090 |
| Tritanopia (no blue cones) | #00C5C7 | 0.066 |
| Achromatopsia (no color) | #AAAAAA | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BB8E5
#1BB8E5
oklch(72.9% 0.133 224.3)
- #EC8A5E
#EC8A5E
oklch(72.9% 0.134 44.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1BB8E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.038
- Turquoise Blue #06B1C4 ΔE 0.050
- Vivid Sky Blue #4CC9F0 ΔE 0.055
- Bright Sky Blue #02CCFE ΔE 0.058
- Dark Turquoise #00CED1 ΔE 0.077
- Lightblue #7BC8F6 ΔE 0.082
- Topaz #13BBAF ΔE 0.084
- Light Sea Green #20B2AA ΔE 0.086
Use #1BB8E5 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.