#39B9F2
Closest named color: Deep Sky Blue (#00BFFF). oklch(74.2% 0.135 232.5), rgb(57, 185, 242).
Aa
Black text reads best on this color (9.39:1).
About this color
#39B9F2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.135 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.023 away. Black text reads best on it, at 9.39:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.39:1 |
| White text | 2.23:1 |
Values
| HEX | #39B9F2 |
| RGB | rgb(57, 185, 242) |
| HSL | hsl(198, 88%, 59%) |
| OKLCH | oklch(74.2% 0.135 232.5) |
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 #39B9F2 | 2.23:1 | Fails | Lc -48.4 | Large or bold text, headings |
| Black text on #39B9F2 | 9.39:1 | AAA | Lc 60.3 | Content text, not long reading |
| #39B9F2 text on white | 2.23:1 | Fails | Lc 43.6 | Non-text elements, placeholder text |
| #39B9F2 text on black | 9.39:1 | AAA | Lc -58.5 | 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
#BBDFF3
oklch(88.4% 0.047 232.3)
-
Step 300
300
#88CBEE
oklch(81% 0.084 232)
-
Step 400
400 (this color)
#39B9F2
oklch(74.2% 0.135 232.5)
-
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)
#39B9F2 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) | #9DB7F5 | 0.088 |
| Deuteranopia (no green cones) | #84A6F1 | 0.074 |
| Tritanopia (no blue cones) | #00C8CC | 0.081 |
| Achromatopsia (no color) | #ADADAD | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39B9F2
#39B9F2
oklch(74.2% 0.135 232.5)
- #ED9154
#ED9154
oklch(74.1% 0.135 52.7)
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 #39B9F2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.023
- Vivid Sky Blue #4CC9F0 ΔE 0.049
- Bright Sky Blue #02CCFE ΔE 0.050
- Lightblue #7BC8F6 ΔE 0.068
- Carolina Blue #8AB8FE ΔE 0.070
- Turquoise Blue #06B1C4 ΔE 0.072
- Sky #82CAFC ΔE 0.078
- Dark Turquoise #00CED1 ΔE 0.088
Use #39B9F2 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.