#99BBD0
Closest named color: Light Grey Blue (#9DBCD4). oklch(77.4% 0.047 235.3), rgb(153, 187, 208).
Aa
Black text reads best on this color (10.37:1).
About this color
#99BBD0 is a medium-light, muted blue. In OKLCH its lightness is 77%, its chroma 0.047 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.008 away. Black text reads best on it, at 10.37:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 10.37:1 |
| White text | 2.02:1 |
Values
| HEX | #99BBD0 |
| RGB | rgb(153, 187, 208) |
| HSL | hsl(203, 37%, 71%) |
| OKLCH | oklch(77.4% 0.047 235.3) |
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 #99BBD0 | 2.02:1 | Fails | Lc -43.8 | Non-text elements, placeholder text |
| Black text on #99BBD0 | 10.37:1 | AAA | Lc 64.6 | Content text, not long reading |
| #99BBD0 text on white | 2.02:1 | Fails | Lc 39.3 | Non-text elements, placeholder text |
| #99BBD0 text on black | 10.37:1 | AAA | Lc -63.0 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF2
oklch(93.7% 0.013 233.7)
-
Step 200
200
#C9DCE8
oklch(88.4% 0.026 235.4)
-
Step 300
300 (this color)
#99BBD0
oklch(77.4% 0.047 235.3)
-
Step 400
400
#71A9CA
oklch(70.8% 0.076 235.2)
-
Step 500
500
#4792BC
oklch(63% 0.098 235.8)
-
Step 600
600
#237CA8
oklch(55.6% 0.105 235.4)
-
Step 700
700
#136890
oklch(49% 0.098 235.6)
-
Step 800
800
#155575
oklch(42.6% 0.081 235.7)
-
Step 900
900
#1A475E
oklch(37.8% 0.063 234.2)
-
Step 950
950
#112937
oklch(26.9% 0.04 236.4)
#99BBD0 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) | #B1BAD1 | 0.031 |
| Deuteranopia (no green cones) | #AAB3D0 | 0.029 |
| Tritanopia (no blue cones) | #89C1C2 | 0.036 |
| Achromatopsia (no color) | #B6B6B6 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BBD0
#99BBD0
oklch(77.4% 0.047 235.3)
- #CEAE99
#CEAE99
oklch(77.3% 0.047 55.2)
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 #99BBD0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.008
- Light Cornflower Blue #98C1D9 ΔE 0.017
- Cloudy Blue #ACC2D9 ΔE 0.033
- French Gray #ADB5BD ΔE 0.034
- Light Steel Blue #B0C4DE ΔE 0.043
- Sky Blue #87CEEB ΔE 0.054
- Silver #C0C0C0 ΔE 0.058
- Cool Steel #97A7B3 ΔE 0.059
Use #99BBD0 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.