#99B3DC
Closest named color: Light Grey Blue (#9DBCD4). oklch(76.2% 0.066 259.4), rgb(153, 179, 220).
Aa
Black text reads best on this color (9.83:1).
About this color
#99B3DC is a medium-light, muted blue. In OKLCH its lightness is 76%, its chroma 0.066 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.031 away. Black text reads best on it, at 9.83:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.83:1 |
| White text | 2.13:1 |
Values
| HEX | #99B3DC |
| RGB | rgb(153, 179, 220) |
| HSL | hsl(217, 49%, 73%) |
| OKLCH | oklch(76.2% 0.066 259.4) |
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 #99B3DC | 2.13:1 | Fails | Lc -46.5 | Large or bold text, headings |
| Black text on #99B3DC | 9.83:1 | AAA | Lc 62.1 | Content text, not long reading |
| #99B3DC text on white | 2.13:1 | Fails | Lc 41.9 | Non-text elements, placeholder text |
| #99B3DC text on black | 9.83:1 | AAA | Lc -60.4 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF7
oklch(93.5% 0.02 260.2)
-
Step 200
200
#CBDAF2
oklch(88.5% 0.037 259.8)
-
Step 300
300 (this color)
#99B3DC
oklch(76.2% 0.066 259.4)
-
Step 400
400
#79A2E2
oklch(70.8% 0.105 259.1)
-
Step 500
500
#5689DA
oklch(63.1% 0.134 259.3)
-
Step 600
600
#3B71C7
oklch(55.6% 0.146 259.4)
-
Step 700
700
#2D5EAC
oklch(49% 0.136 259.4)
-
Step 800
800
#264D8C
oklch(42.7% 0.114 259.6)
-
Step 900
900
#244170
oklch(37.8% 0.088 259.6)
-
Step 950
950
#152641
oklch(26.9% 0.056 259.3)
#99B3DC 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) | #A5B5DE | 0.017 |
| Deuteranopia (no green cones) | #9EAFDB | 0.012 |
| Tritanopia (no blue cones) | #86BCC1 | 0.058 |
| Achromatopsia (no color) | #B1B1B1 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99B3DC
#99B3DC
oklch(76.2% 0.066 259.4)
- #C8AD82
#C8AD82
oklch(76.1% 0.066 79.1)
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 #99B3DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.031
- Light Cornflower Blue #98C1D9 ΔE 0.040
- Carolina Blue #8AB8FE ΔE 0.049
- Cloudy Blue #ACC2D9 ΔE 0.051
- French Gray #ADB5BD ΔE 0.052
- Pastel Blue #A2BFFE ΔE 0.054
- Light Steel Blue #B0C4DE ΔE 0.057
- Cool Steel #97A7B3 ΔE 0.060
Use #99B3DC 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.