#C4E9FB
Closest named color: Diamond (#B9F2FF). oklch(91.3% 0.046 228.8), rgb(196, 233, 251).
Aa
Black text reads best on this color (16.39:1).
About this color
#C4E9FB is a very light, muted teal or cyan. In OKLCH its lightness is 91%, its chroma 0.046 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Diamond (#B9F2FF), ΔE 0.024 away. Black text reads best on it, at 16.39:1.
| Hue family | Teals and cyans |
| Lightness | very light (91%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Diamond (#B9F2FF) |
| Black text | 16.39:1 |
| White text | 1.28:1 |
Values
| HEX | #C4E9FB |
| RGB | rgb(196, 233, 251) |
| HSL | hsl(200, 87%, 88%) |
| OKLCH | oklch(91.3% 0.046 228.8) |
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 #C4E9FB | 1.28:1 | Fails | Lc -16.0 | Dividers and decoration only |
| Black text on #C4E9FB | 16.39:1 | AAA | Lc 89.7 | Fine for body text |
| #C4E9FB text on white | 1.28:1 | Fails | Lc 13.9 | Not readable |
| #C4E9FB text on black | 16.39:1 | AAA | Lc -89.9 | 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 100.
-
Step 50
50
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100 (this color)
#C4E9FB
oklch(91.3% 0.046 228.8)
-
Step 200
200
#C4DEEB
oklch(88.5% 0.033 229.3)
-
Step 300
300
#99C9DF
oklch(81% 0.059 227.8)
-
Step 400
400
#5BACCF
oklch(70.7% 0.094 228.4)
-
Step 500
500
#1496C3
oklch(63% 0.12 229.1)
-
Step 600
600
#007EA6
oklch(55.5% 0.11 229.3)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#004861
oklch(37.6% 0.075 229.8)
-
Step 950
950
#042B3A
oklch(27.1% 0.05 229)
#C4E9FB 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) | #E0E7FC | 0.035 |
| Deuteranopia (no green cones) | #D8E0FB | 0.032 |
| Tritanopia (no blue cones) | #B4EEEF | 0.031 |
| Achromatopsia (no color) | #E3E3E3 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C4E9FB
#C4E9FB
oklch(91.3% 0.046 228.8)
- #FDDAC8
#FDDAC8
oklch(91.3% 0.046 48.9)
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 #C4E9FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Diamond #B9F2FF ΔE 0.024
- Pale Sky Blue #BDF6FE ΔE 0.033
- Pale Turquoise #AFEEEE ΔE 0.036
- Lavender #E6E6FA ΔE 0.042
- Powder Blue #B0E0E6 ΔE 0.043
- Pale Silver #D8E2DC ΔE 0.044
- Platinum #E0E1DD ΔE 0.048
- Robin's Egg Blue #98EFF9 ΔE 0.048
Use #C4E9FB 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.