#99ADEF
Closest named color: Carolina Blue (#8AB8FE). oklch(75.7% 0.098 271), rgb(153, 173, 239).
Aa
Black text reads best on this color (9.57:1).
About this color
#99ADEF is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.098 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.033 away. Black text reads best on it, at 9.57:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.57:1 |
| White text | 2.19:1 |
Values
| HEX | #99ADEF |
| RGB | rgb(153, 173, 239) |
| HSL | hsl(226, 73%, 77%) |
| OKLCH | oklch(75.7% 0.098 271) |
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 #99ADEF | 2.19:1 | Fails | Lc -47.8 | Large or bold text, headings |
| Black text on #99ADEF | 9.57:1 | AAA | Lc 60.9 | Content text, not long reading |
| #99ADEF text on white | 2.19:1 | Fails | Lc 43.1 | Non-text elements, placeholder text |
| #99ADEF text on black | 9.57:1 | AAA | Lc -59.1 | Large or bold text, headings |
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 400.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D8F0
oklch(88.4% 0.034 271)
-
Step 300
300
#B2BFE9
oklch(80.9% 0.061 271.5)
-
Step 400
400 (this color)
#99ADEF
oklch(75.7% 0.098 271)
-
Step 500
500
#6E84D5
oklch(63.2% 0.125 271)
-
Step 600
600
#566CC2
oklch(55.6% 0.136 270.7)
-
Step 700
700
#475AA8
oklch(49.2% 0.126 270.8)
-
Step 800
800
#3A4A88
oklch(42.8% 0.104 270.6)
-
Step 900
900
#323E6D
oklch(37.7% 0.082 271.2)
-
Step 950
950
#1D2540
oklch(27.1% 0.052 270.2)
#99ADEF 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) | #97B3F2 | 0.015 |
| Deuteranopia (no green cones) | #90ACED | 0.012 |
| Tritanopia (no blue cones) | #7FBAC4 | 0.088 |
| Achromatopsia (no color) | #AFAFAF | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99ADEF
#99ADEF
oklch(75.7% 0.098 271)
- #C7AE64
#C7AE64
oklch(75.7% 0.098 91.3)
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 #99ADEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.033
- Pastel Blue #A2BFFE ΔE 0.050
- Periwinkle Blue #8F99FB ΔE 0.062
- Light Grey Blue #9DBCD4 ΔE 0.065
- Light Cornflower Blue #98C1D9 ΔE 0.071
- Lightblue #7BC8F6 ΔE 0.073
- Sky #82CAFC ΔE 0.075
- Pale Violet #CEAEFA ΔE 0.076
Use #99ADEF 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.