#99BEE5
Closest named color: Light Cornflower Blue (#98C1D9). oklch(78.8% 0.069 250), rgb(153, 190, 229).
Aa
Black text reads best on this color (10.85:1).
About this color
#99BEE5 is a light, muted blue. In OKLCH its lightness is 79%, its chroma 0.069 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Cornflower Blue (#98C1D9), ΔE 0.022 away. Black text reads best on it, at 10.85:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Light Cornflower Blue (#98C1D9) |
| Black text | 10.85:1 |
| White text | 1.93:1 |
Values
| HEX | #99BEE5 |
| RGB | rgb(153, 190, 229) |
| HSL | hsl(211, 59%, 75%) |
| OKLCH | oklch(78.8% 0.069 250) |
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 #99BEE5 | 1.93:1 | Fails | Lc -41.4 | Non-text elements, placeholder text |
| Black text on #99BEE5 | 10.85:1 | AAA | Lc 66.8 | Content text, not long reading |
| #99BEE5 text on white | 1.93:1 | Fails | Lc 37.1 | Non-text elements, placeholder text |
| #99BEE5 text on black | 10.85:1 | AAA | Lc -65.4 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF2
oklch(88.6% 0.038 249.5)
-
Step 300
300 (this color)
#99BEE5
oklch(78.8% 0.069 250)
-
Step 400
400
#69A5E2
oklch(70.6% 0.11 250)
-
Step 500
500
#3C8DDA
oklch(63% 0.14 250.1)
-
Step 600
600
#0E76C8
oklch(55.6% 0.152 250)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800
#06518C
oklch(42.8% 0.117 249.9)
-
Step 900
900
#134370
oklch(37.6% 0.092 250.7)
-
Step 950
950
#0D2841
oklch(27% 0.057 249.3)
#99BEE5 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) | #AFBFE7 | 0.028 |
| Deuteranopia (no green cones) | #A6B7E4 | 0.023 |
| Tritanopia (no blue cones) | #81C7CB | 0.059 |
| Achromatopsia (no color) | #BABABA | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BEE5
#99BEE5
oklch(78.8% 0.069 250)
- #D7B38A
#D7B38A
oklch(78.9% 0.069 70.2)
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 #99BEE5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Cornflower Blue #98C1D9 ΔE 0.022
- Light Grey Blue #9DBCD4 ΔE 0.024
- Cloudy Blue #ACC2D9 ΔE 0.033
- Light Steel Blue #B0C4DE ΔE 0.036
- Pastel Blue #A2BFFE ΔE 0.039
- Lightblue #7BC8F6 ΔE 0.040
- Sky #82CAFC ΔE 0.042
- Sky Blue #87CEEB ΔE 0.043
Use #99BEE5 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.