#99CDEE
Closest named color: Sky Blue (#87CEEB). oklch(82.4% 0.071 236.6), rgb(153, 205, 238).
Aa
Black text reads best on this color (12.32:1).
About this color
#99CDEE is a light, moderately saturated blue. In OKLCH its lightness is 82%, its chroma 0.071 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Sky Blue (#87CEEB), ΔE 0.020 away. Black text reads best on it, at 12.32:1.
| Hue family | Blues |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Sky Blue (#87CEEB) |
| Black text | 12.32:1 |
| White text | 1.70:1 |
Values
| HEX | #99CDEE |
| RGB | rgb(153, 205, 238) |
| HSL | hsl(203, 71%, 77%) |
| OKLCH | oklch(82.4% 0.071 236.6) |
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 #99CDEE | 1.70:1 | Fails | Lc -34.3 | Non-text elements, placeholder text |
| Black text on #99CDEE | 12.32:1 | AAA | Lc 73.4 | Content text, not long reading |
| #99CDEE text on white | 1.70:1 | Fails | Lc 30.5 | Non-text elements, placeholder text |
| #99CDEE text on black | 12.32:1 | AAA | Lc -72.3 | 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
#F0F7FB
oklch(97.2% 0.009 232.4)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C1DEF0
oklch(88.5% 0.04 235.2)
-
Step 300
300 (this color)
#99CDEE
oklch(82.4% 0.071 236.6)
-
Step 400
400
#51ABDE
oklch(70.7% 0.114 236.3)
-
Step 500
500
#0094D1
oklch(63.1% 0.137 236.6)
-
Step 600
600
#007CB0
oklch(55.5% 0.121 236.7)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#004767
oklch(37.7% 0.082 236.6)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#99CDEE 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) | #BECCF0 | 0.045 |
| Deuteranopia (no green cones) | #B2C2ED | 0.039 |
| Tritanopia (no blue cones) | #7CD6D8 | 0.055 |
| Achromatopsia (no color) | #C6C6C6 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99CDEE
#99CDEE
oklch(82.4% 0.071 236.6)
- #EABA99
#EABA99
oklch(82.4% 0.071 56)
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 #99CDEE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sky Blue #87CEEB ΔE 0.020
- Light Sky Blue #87CEFA ΔE 0.023
- Baby Blue #A2CFFE ΔE 0.026
- Sky #82CAFC ΔE 0.033
- Light Steel Blue #B0C4DE ΔE 0.035
- Light Blue Grey #B7C9E2 ΔE 0.037
- Lightblue #7BC8F6 ΔE 0.037
- Light Cornflower Blue #98C1D9 ΔE 0.038
Use #99CDEE 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.