#99BEE1
Closest named color: Light Cornflower Blue (#98C1D9). oklch(78.7% 0.064 247.2), rgb(153, 190, 225).
Aa
Black text reads best on this color (10.80:1).
About this color
#99BEE1 is a light, muted blue. In OKLCH its lightness is 79%, its chroma 0.064 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Light Cornflower Blue (#98C1D9), ΔE 0.016 away. Black text reads best on it, at 10.80:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Light Cornflower Blue (#98C1D9) |
| Black text | 10.80:1 |
| White text | 1.94:1 |
Values
| HEX | #99BEE1 |
| RGB | rgb(153, 190, 225) |
| HSL | hsl(209, 55%, 74%) |
| OKLCH | oklch(78.7% 0.064 247.2) |
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 #99BEE1 | 1.94:1 | Fails | Lc -41.6 | Non-text elements, placeholder text |
| Black text on #99BEE1 | 10.80:1 | AAA | Lc 66.6 | Content text, not long reading |
| #99BEE1 text on white | 1.94:1 | Fails | Lc 37.3 | Non-text elements, placeholder text |
| #99BEE1 text on black | 10.80:1 | AAA | Lc -65.2 | 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
#C7DCF0
oklch(88.5% 0.036 246.9)
-
Step 300
300 (this color)
#99BEE1
oklch(78.7% 0.064 247.2)
-
Step 400
400
#6AA6DD
oklch(70.6% 0.102 247.4)
-
Step 500
500
#3D8FD4
oklch(63.1% 0.131 247.2)
-
Step 600
600
#0E78C1
oklch(55.7% 0.142 247)
-
Step 700
700
#0064A5
oklch(49% 0.13 247.2)
-
Step 800
800
#065287
oklch(42.7% 0.11 247.2)
-
Step 900
900
#13446C
oklch(37.6% 0.086 247.6)
-
Step 950
950
#0D283F
oklch(26.9% 0.054 247.3)
#99BEE1 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) | #B0BEE3 | 0.029 |
| Deuteranopia (no green cones) | #A7B7E0 | 0.024 |
| Tritanopia (no blue cones) | #83C6C9 | 0.054 |
| Achromatopsia (no color) | #BABABA | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BEE1
#99BEE1
oklch(78.7% 0.064 247.2)
- #D6B28E
#D6B28E
oklch(78.6% 0.064 66.7)
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 #99BEE1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Cornflower Blue #98C1D9 ΔE 0.016
- Light Grey Blue #9DBCD4 ΔE 0.018
- Cloudy Blue #ACC2D9 ΔE 0.030
- Light Steel Blue #B0C4DE ΔE 0.035
- Lightblue #7BC8F6 ΔE 0.042
- Sky Blue #87CEEB ΔE 0.043
- Pastel Blue #A2BFFE ΔE 0.044
- Sky #82CAFC ΔE 0.045
Use #99BEE1 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.