#99B5CC
Closest named color: Light Grey Blue (#9DBCD4). oklch(76% 0.045 243.1), rgb(153, 181, 204).
Aa
Black text reads best on this color (9.83:1).
About this color
#99B5CC is a medium-light, muted blue. In OKLCH its lightness is 76%, its chroma 0.045 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.021 away. Black text reads best on it, at 9.83:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.83:1 |
| White text | 2.13:1 |
Values
| HEX | #99B5CC |
| RGB | rgb(153, 181, 204) |
| HSL | hsl(207, 33%, 70%) |
| OKLCH | oklch(76% 0.045 243.1) |
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 #99B5CC | 2.13:1 | Fails | Lc -46.6 | Large or bold text, headings |
| Black text on #99B5CC | 9.83:1 | AAA | Lc 62.1 | Content text, not long reading |
| #99B5CC text on white | 2.13:1 | Fails | Lc 41.9 | Non-text elements, placeholder text |
| #99B5CC text on black | 9.83:1 | AAA | Lc -60.3 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE9
oklch(88.4% 0.025 246.2)
-
Step 300
300 (this color)
#99B5CC
oklch(76% 0.045 243.1)
-
Step 400
400
#79A6CB
oklch(70.7% 0.073 243.9)
-
Step 500
500
#5590BD
oklch(63.2% 0.092 243)
-
Step 600
600
#3779A9
oklch(55.5% 0.1 243.1)
-
Step 700
700
#296691
oklch(49.1% 0.093 242.8)
-
Step 800
800
#245376
oklch(42.7% 0.078 243.6)
-
Step 900
900
#22455F
oklch(37.7% 0.06 242.8)
-
Step 950
950
#152938
oklch(27.2% 0.038 242.4)
#99B5CC 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) | #ACB5CD | 0.025 |
| Deuteranopia (no green cones) | #A5AFCC | 0.021 |
| Tritanopia (no blue cones) | #8BBBBC | 0.037 |
| Achromatopsia (no color) | #B1B1B1 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99B5CC
#99B5CC
oklch(76% 0.045 243.1)
- #C6AB94
#C6AB94
oklch(75.9% 0.045 62.5)
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 #99B5CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.021
- French Gray #ADB5BD ΔE 0.032
- Light Cornflower Blue #98C1D9 ΔE 0.032
- Cool Steel #97A7B3 ΔE 0.045
- Cloudy Blue #ACC2D9 ΔE 0.046
- Dark Gray #A9A9A9 ΔE 0.052
- Light Steel Blue #B0C4DE ΔE 0.055
- Pewter #96A8A1 ΔE 0.063
Use #99B5CC 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.