#99BEE3
Closest named color: Light Cornflower Blue (#98C1D9). oklch(78.7% 0.066 248.7), rgb(153, 190, 227).
Aa
Black text reads best on this color (10.82:1).
About this color
#99BEE3 is a light, muted blue. In OKLCH its lightness is 79%, its chroma 0.066 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Light Cornflower Blue (#98C1D9), ΔE 0.019 away. Black text reads best on it, at 10.82:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Light Cornflower Blue (#98C1D9) |
| Black text | 10.82:1 |
| White text | 1.93:1 |
Values
| HEX | #99BEE3 |
| RGB | rgb(153, 190, 227) |
| HSL | hsl(210, 57%, 75%) |
| OKLCH | oklch(78.7% 0.066 248.7) |
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 #99BEE3 | 1.93:1 | Fails | Lc -41.5 | Non-text elements, placeholder text |
| Black text on #99BEE3 | 10.82:1 | AAA | Lc 66.7 | Content text, not long reading |
| #99BEE3 text on white | 1.93:1 | Fails | Lc 37.2 | Non-text elements, placeholder text |
| #99BEE3 text on black | 10.82:1 | AAA | Lc -65.3 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF6
oklch(93.5% 0.019 248)
-
Step 200
200
#C7DCF1
oklch(88.5% 0.037 248.2)
-
Step 300
300 (this color)
#99BEE3
oklch(78.7% 0.066 248.7)
-
Step 400
400
#6AA6E0
oklch(70.8% 0.106 248.7)
-
Step 500
500
#3D8ED7
oklch(63.1% 0.135 248.8)
-
Step 600
600
#0E77C5
oklch(55.7% 0.148 248.7)
-
Step 700
700
#0064A8
oklch(49.2% 0.133 248.3)
-
Step 800
800
#065189
oklch(42.6% 0.113 248.7)
-
Step 900
900
#13446E
oklch(37.7% 0.088 248.7)
-
Step 950
950
#0D2840
oklch(27% 0.056 248.3)
#99BEE3 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) | #B0BEE5 | 0.029 |
| Deuteranopia (no green cones) | #A7B7E2 | 0.024 |
| Tritanopia (no blue cones) | #82C6CA | 0.055 |
| Achromatopsia (no color) | #BABABA | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BEE3
#99BEE3
oklch(78.7% 0.066 248.7)
- #D6B38C
#D6B38C
oklch(78.8% 0.066 69.7)
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 #99BEE3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Cornflower Blue #98C1D9 ΔE 0.019
- Light Grey Blue #9DBCD4 ΔE 0.021
- Cloudy Blue #ACC2D9 ΔE 0.031
- Light Steel Blue #B0C4DE ΔE 0.036
- Lightblue #7BC8F6 ΔE 0.041
- Pastel Blue #A2BFFE ΔE 0.041
- Sky Blue #87CEEB ΔE 0.043
- Sky #82CAFC ΔE 0.044
Use #99BEE3 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.