#99BBD7
Closest named color: Light Grey Blue (#9DBCD4). oklch(77.7% 0.054 243.4), rgb(153, 187, 215).
Aa
Black text reads best on this color (10.44:1).
About this color
#99BBD7 is a medium-light, muted blue. In OKLCH its lightness is 78%, its chroma 0.054 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.008 away. Black text reads best on it, at 10.44:1.
| Hue family | Blues |
| Lightness | medium-light (78%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 10.44:1 |
| White text | 2.01:1 |
Values
| HEX | #99BBD7 |
| RGB | rgb(153, 187, 215) |
| HSL | hsl(207, 44%, 72%) |
| OKLCH | oklch(77.7% 0.054 243.4) |
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 #99BBD7 | 2.01:1 | Fails | Lc -43.5 | Non-text elements, placeholder text |
| Black text on #99BBD7 | 10.44:1 | AAA | Lc 64.9 | Content text, not long reading |
| #99BBD7 text on white | 2.01:1 | Fails | Lc 39.0 | Non-text elements, placeholder text |
| #99BBD7 text on black | 10.44:1 | AAA | Lc -63.4 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCEC
oklch(88.5% 0.03 243.4)
-
Step 300
300 (this color)
#99BBD7
oklch(77.7% 0.054 243.4)
-
Step 400
400
#70A7D3
oklch(70.7% 0.087 243.6)
-
Step 500
500
#4690C7
oklch(63% 0.111 243.4)
-
Step 600
600
#227AB4
oklch(55.7% 0.12 243.1)
-
Step 700
700
#12669B
oklch(49.1% 0.112 243.4)
-
Step 800
800
#14537E
oklch(42.6% 0.094 244)
-
Step 900
900
#194565
oklch(37.6% 0.073 243.7)
-
Step 950
950
#10293B
oklch(27.1% 0.046 242.4)
#99BBD7 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) | #B0BBD8 | 0.029 |
| Deuteranopia (no green cones) | #A8B4D6 | 0.025 |
| Tritanopia (no blue cones) | #86C2C4 | 0.045 |
| Achromatopsia (no color) | #B7B7B7 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BBD7
#99BBD7
oklch(77.7% 0.054 243.4)
- #D0AF93
#D0AF93
oklch(77.6% 0.054 62.2)
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 #99BBD7, 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 0.016
- Cloudy Blue #ACC2D9 ΔE 0.032
- Light Steel Blue #B0C4DE ΔE 0.040
- French Gray #ADB5BD ΔE 0.041
- Sky Blue #87CEEB ΔE 0.051
- Lightblue #7BC8F6 ΔE 0.053
- Light Blue Grey #B7C9E2 ΔE 0.057
Use #99BBD7 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.