#31BAEF
Closest named color: Deep Sky Blue (#00BFFF). oklch(74.1% 0.135 229.6), rgb(49, 186, 239).
Aa
Black text reads best on this color (9.40:1).
About this color
#31BAEF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.135 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.024 away. Black text reads best on it, at 9.40:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.40:1 |
| White text | 2.23:1 |
Values
| HEX | #31BAEF |
| RGB | rgb(49, 186, 239) |
| HSL | hsl(197, 86%, 56%) |
| OKLCH | oklch(74.1% 0.135 229.6) |
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 #31BAEF | 2.23:1 | Fails | Lc -48.3 | Large or bold text, headings |
| Black text on #31BAEF | 9.40:1 | AAA | Lc 60.4 | Content text, not long reading |
| #31BAEF text on white | 2.23:1 | Fails | Lc 43.6 | Non-text elements, placeholder text |
| #31BAEF text on black | 9.40:1 | AAA | Lc -58.6 | 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
#DAEDF7
oklch(93.5% 0.024 230.4)
-
Step 200
200
#BAE0F2
oklch(88.5% 0.047 228.2)
-
Step 300
300
#86CBED
oklch(80.8% 0.084 230.5)
-
Step 400
400 (this color)
#31BAEF
oklch(74.1% 0.135 229.6)
-
Step 500
500
#0096C6
oklch(63% 0.126 229.9)
-
Step 600
600
#007EA7
oklch(55.5% 0.111 230)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800
#005774
oklch(42.7% 0.085 229.4)
-
Step 900
900
#004861
oklch(37.6% 0.075 229.8)
-
Step 950
950
#002B3B
oklch(27% 0.053 228.8)
#31BAEF 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) | #9FB7F2 | 0.094 |
| Deuteranopia (no green cones) | #86A6EE | 0.080 |
| Tritanopia (no blue cones) | #00C9CC | 0.077 |
| Achromatopsia (no color) | #ADADAD | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31BAEF
#31BAEF
oklch(74.1% 0.135 229.6)
- #EE9059
#EE9059
oklch(74.1% 0.134 49.9)
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 #31BAEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.024
- Vivid Sky Blue #4CC9F0 ΔE 0.046
- Bright Sky Blue #02CCFE ΔE 0.048
- Turquoise Blue #06B1C4 ΔE 0.067
- Lightblue #7BC8F6 ΔE 0.070
- Carolina Blue #8AB8FE ΔE 0.075
- Sky #82CAFC ΔE 0.080
- Dark Turquoise #00CED1 ΔE 0.082
Use #31BAEF 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.