#39B6EE
Closest named color: Deep Sky Blue (#00BFFF). oklch(73.3% 0.133 232.6), rgb(57, 182, 238).
Aa
Black text reads best on this color (9.09:1).
About this color
#39B6EE is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.133 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.030 away. Black text reads best on it, at 9.09:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.09:1 |
| White text | 2.30:1 |
Values
| HEX | #39B6EE |
| RGB | rgb(57, 182, 238) |
| HSL | hsl(199, 84%, 58%) |
| OKLCH | oklch(73.3% 0.133 232.6) |
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 #39B6EE | 2.30:1 | Fails | Lc -50.0 | Large or bold text, headings |
| Black text on #39B6EE | 9.09:1 | AAA | Lc 58.9 | Large or bold text, headings |
| #39B6EE text on white | 2.30:1 | Fails | Lc 45.1 | Large or bold text, headings |
| #39B6EE text on black | 9.09:1 | AAA | Lc -57.0 | 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
#EEF7FC
oklch(97.1% 0.012 231.7)
-
Step 100
100
#DBEDF8
oklch(93.6% 0.024 234.4)
-
Step 200
200
#BCDFF3
oklch(88.5% 0.046 233.1)
-
Step 300
300
#89CAEE
oklch(80.8% 0.083 233.5)
-
Step 400
400 (this color)
#39B6EE
oklch(73.3% 0.133 232.6)
-
Step 500
500
#0095CA
oklch(63% 0.13 232.7)
-
Step 600
600
#007EAB
oklch(55.7% 0.114 232.4)
-
Step 700
700
#006990
oklch(49% 0.101 232.9)
-
Step 800
800
#005677
oklch(42.6% 0.088 233.1)
-
Step 900
900
#004864
oklch(37.8% 0.078 232.8)
-
Step 950
950
#002B3D
oklch(27.1% 0.055 231.9)
#39B6EE 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) | #9AB4F1 | 0.086 |
| Deuteranopia (no green cones) | #82A3ED | 0.073 |
| Tritanopia (no blue cones) | #00C5C9 | 0.080 |
| Achromatopsia (no color) | #ABABAB | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39B6EE
#39B6EE
oklch(73.3% 0.133 232.6)
- #E98F53
#E98F53
oklch(73.2% 0.133 52.8)
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 #39B6EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.030
- Vivid Sky Blue #4CC9F0 ΔE 0.056
- Bright Sky Blue #02CCFE ΔE 0.058
- Turquoise Blue #06B1C4 ΔE 0.066
- Carolina Blue #8AB8FE ΔE 0.074
- Lightblue #7BC8F6 ΔE 0.075
- Sky #82CAFC ΔE 0.085
- Cornflower Blue #6495ED ΔE 0.090
Use #39B6EE 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.