#99C4FF
Closest named color: Pastel Blue (#A2BFFE). oklch(81.1% 0.096 256.4), rgb(153, 196, 255).
Aa
Black text reads best on this color (11.69:1).
About this color
#99C4FF is a light, moderately saturated blue. In OKLCH its lightness is 81%, its chroma 0.096 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.016 away. Black text reads best on it, at 11.69:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 11.69:1 |
| White text | 1.79:1 |
Values
| HEX | #99C4FF |
| RGB | rgb(153, 196, 255) |
| HSL | hsl(215, 100%, 80%) |
| OKLCH | oklch(81.1% 0.096 256.4) |
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 #99C4FF | 1.79:1 | Fails | Lc -37.3 | Non-text elements, placeholder text |
| Black text on #99C4FF | 11.69:1 | AAA | Lc 70.6 | Content text, not long reading |
| #99C4FF text on white | 1.79:1 | Fails | Lc 33.2 | Non-text elements, placeholder text |
| #99C4FF text on black | 11.69:1 | AAA | Lc -69.4 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFD
oklch(93.6% 0.028 256.5)
-
Step 200
200
#C3DBFD
oklch(88.5% 0.054 257.1)
-
Step 300
300 (this color)
#99C4FF
oklch(81.1% 0.096 256.4)
-
Step 400
400
#5DA1FE
oklch(70.6% 0.154 256.7)
-
Step 500
500
#2686FC
oklch(63% 0.196 256.5)
-
Step 600
600
#006FE0
oklch(55.6% 0.192 256.3)
-
Step 700
700
#005DBE
oklch(49.2% 0.17 256.3)
-
Step 800
800
#004C9D
oklch(42.8% 0.147 256.2)
-
Step 900
900
#033F83
oklch(37.7% 0.127 256.4)
-
Step 950
950
#07264D
oklch(27.2% 0.08 256.3)
#99C4FF 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) | #AEC7FF | 0.027 |
| Deuteranopia (no green cones) | #A3BDFE | 0.020 |
| Tritanopia (no blue cones) | #75D1D8 | 0.085 |
| Achromatopsia (no color) | #C1C1C1 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99C4FF
#99C4FF
oklch(81.1% 0.096 256.4)
- #E5B979
#E5B979
oklch(81.1% 0.096 76.1)
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 #99C4FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.016
- Sky #82CAFC ΔE 0.029
- Baby Blue #A2CFFE ΔE 0.033
- Light Sky Blue #87CEFA ΔE 0.034
- Lightblue #7BC8F6 ΔE 0.037
- Carolina Blue #8AB8FE ΔE 0.038
- Sky Blue #87CEEB ΔE 0.049
- Light Periwinkle #C1C6FC ΔE 0.051
Use #99C4FF 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.