#31CFE2
Closest named color: Aqua Blue (#02D8E9). oklch(78.5% 0.126 207.4), rgb(49, 207, 226).
Aa
Black text reads best on this color (11.15:1).
About this color
#31CFE2 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.126 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.024 away. Black text reads best on it, at 11.15:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 11.15:1 |
| White text | 1.88:1 |
Values
| HEX | #31CFE2 |
| RGB | rgb(49, 207, 226) |
| HSL | hsl(186, 75%, 54%) |
| OKLCH | oklch(78.5% 0.126 207.4) |
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 #31CFE2 | 1.88:1 | Fails | Lc -39.4 | Non-text elements, placeholder text |
| Black text on #31CFE2 | 11.15:1 | AAA | Lc 68.6 | Content text, not long reading |
| #31CFE2 text on white | 1.88:1 | Fails | Lc 35.2 | Non-text elements, placeholder text |
| #31CFE2 text on black | 11.15:1 | AAA | Lc -67.3 | Content text, not long reading |
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 300.
-
Step 50
50
#E9F9FB
oklch(97.1% 0.017 205.8)
-
Step 100
100
#CFF1F6
oklch(93.5% 0.036 207.4)
-
Step 200
200
#A2E7F1
oklch(88.6% 0.07 207.3)
-
Step 300
300 (this color)
#31CFE2
oklch(78.5% 0.126 207.4)
-
Step 400
400
#00B5C7
oklch(70.7% 0.121 207.4)
-
Step 500
500
#009BAB
oklch(63% 0.108 207.7)
-
Step 600
600
#008290
oklch(55.5% 0.095 208)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950
#002D32
oklch(27.1% 0.046 206.3)
#31CFE2 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) | #BCC7E3 | 0.120 |
| Deuteranopia (no green cones) | #A5B5E2 | 0.112 |
| Tritanopia (no blue cones) | #00D9D5 | 0.039 |
| Achromatopsia (no color) | #BDBDBD | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31CFE2
#31CFE2
oklch(78.5% 0.126 207.4)
- #FF998D
#FF998D
oklch(78.6% 0.124 27.4)
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 #31CFE2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.024
- Dark Turquoise #00CED1 ΔE 0.028
- Vivid Sky Blue #4CC9F0 ΔE 0.033
- Medium Turquoise #48D1CC ΔE 0.035
- Bright Sky Blue #02CCFE ΔE 0.044
- Sky Blue #87CEEB ΔE 0.062
- Turquoise #40E0D0 ΔE 0.062
- Lightblue #7BC8F6 ΔE 0.063
Use #31CFE2 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.