#99B0CB
Closest named color: Light Grey Blue (#9DBCD4). oklch(74.9% 0.047 252.6), rgb(153, 176, 203).
Aa
Black text reads best on this color (9.42:1).
About this color
#99B0CB is a medium-light, muted blue. In OKLCH its lightness is 75%, its chroma 0.047 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.033 away. Black text reads best on it, at 9.42:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.42:1 |
| White text | 2.22:1 |
Values
| HEX | #99B0CB |
| RGB | rgb(153, 176, 203) |
| HSL | hsl(212, 32%, 70%) |
| OKLCH | oklch(74.9% 0.047 252.6) |
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 #99B0CB | 2.22:1 | Fails | Lc -48.7 | Large or bold text, headings |
| Black text on #99B0CB | 9.42:1 | AAA | Lc 60.1 | Content text, not long reading |
| #99B0CB text on white | 2.22:1 | Fails | Lc 43.9 | Non-text elements, placeholder text |
| #99B0CB text on black | 9.42:1 | AAA | Lc -58.3 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE4
oklch(88.5% 0.016 253.9)
-
Step 300
300
#B4C2D3
oklch(80.9% 0.029 253.3)
-
Step 400
400 (this color)
#99B0CB
oklch(74.9% 0.047 252.6)
-
Step 500
500
#708CAD
oklch(63.1% 0.059 252.9)
-
Step 600
600
#587699
oklch(55.7% 0.065 252.8)
-
Step 700
700
#486382
oklch(49.1% 0.06 252.4)
-
Step 800
800
#3B516A
oklch(42.8% 0.05 252.1)
-
Step 900
900
#334356
oklch(37.7% 0.039 253.1)
-
Step 950
950
#1E2732
oklch(26.9% 0.024 253.7)
#99B0CB 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) | #A6B1CC | 0.018 |
| Deuteranopia (no green cones) | #A1ABCA | 0.016 |
| Tritanopia (no blue cones) | #8BB6B9 | 0.040 |
| Achromatopsia (no color) | #AEAEAE | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99B0CB
#99B0CB
oklch(74.9% 0.047 252.6)
- #C0A98E
#C0A98E
oklch(74.8% 0.046 71.5)
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 #99B0CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.033
- Cool Steel #97A7B3 ΔE 0.037
- French Gray #ADB5BD ΔE 0.038
- Light Cornflower Blue #98C1D9 ΔE 0.045
- Dark Gray #A9A9A9 ΔE 0.049
- Bluegrey #85A3B2 ΔE 0.054
- Cool Grey #95A3A6 ΔE 0.056
- Cloudy Blue #ACC2D9 ΔE 0.056
Use #99B0CB 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.