#66E2F7
Closest named color: Robin's Egg (#6DEDFD). oklch(85% 0.113 210.3), rgb(102, 226, 247).
Aa
Black text reads best on this color (13.78:1).
About this color
#66E2F7 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 85%, its chroma 0.113 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg (#6DEDFD), ΔE 0.030 away. Black text reads best on it, at 13.78:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Robin's Egg (#6DEDFD) |
| Black text | 13.78:1 |
| White text | 1.52:1 |
Values
| HEX | #66E2F7 |
| RGB | rgb(102, 226, 247) |
| HSL | hsl(189, 90%, 68%) |
| OKLCH | oklch(85% 0.113 210.3) |
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 #66E2F7 | 1.52:1 | Fails | Lc -27.2 | Dividers and decoration only |
| Black text on #66E2F7 | 13.78:1 | AAA | Lc 79.7 | Fine for body text |
| #66E2F7 text on white | 1.52:1 | Fails | Lc 24.0 | Dividers and decoration only |
| #66E2F7 text on black | 13.78:1 | AAA | Lc -79.1 | Fine for body text |
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 200.
-
Step 50
50
#E7F9FD
oklch(97% 0.02 212.5)
-
Step 100
100
#CBF2FA
oklch(93.6% 0.042 211.5)
-
Step 200
200 (this color)
#66E2F7
oklch(85% 0.113 210.3)
-
Step 300
300
#00D8F3
oklch(80.9% 0.14 210.6)
-
Step 400
400
#00B4CB
oklch(70.6% 0.122 210.8)
-
Step 500
500
#009BAE
oklch(63.2% 0.109 210)
-
Step 600
600
#008293
oklch(55.6% 0.096 210.7)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B55
oklch(37.8% 0.065 210)
-
Step 950
950
#002C33
oklch(26.9% 0.047 211.1)
#66E2F7 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) | #D0DBF8 | 0.107 |
| Deuteranopia (no green cones) | #BACAF7 | 0.098 |
| Tritanopia (no blue cones) | #00EBE8 | 0.050 |
| Achromatopsia (no color) | #D1D1D1 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66E2F7
#66E2F7
oklch(85% 0.113 210.3)
- #FFBAAE
#FFBAAE
oklch(85% 0.082 30)
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 #66E2F7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg #6DEDFD ΔE 0.030
- Aqua Blue #02D8E9 ΔE 0.053
- Robin Egg Blue #8AF1FE ΔE 0.053
- Sky Blue #87CEEB ΔE 0.054
- Bright Light Blue #26F7FD ΔE 0.057
- Robin's Egg Blue #98EFF9 ΔE 0.058
- Light Sky Blue #87CEFA ΔE 0.059
- Turquoise #40E0D0 ΔE 0.062
Use #66E2F7 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.