#999DBE
Closest named color: Cool Gray (#8D99AE). oklch(70.4% 0.048 279.6), rgb(153, 157, 190).
Aa
Black text reads best on this color (7.92:1).
About this color
#999DBE is a medium-light, muted blue. In OKLCH its lightness is 70%, its chroma 0.048 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.030 away. Black text reads best on it, at 7.92:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.92:1 |
| White text | 2.65:1 |
Values
| HEX | #999DBE |
| RGB | rgb(153, 157, 190) |
| HSL | hsl(234, 22%, 67%) |
| OKLCH | oklch(70.4% 0.048 279.6) |
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 #999DBE | 2.65:1 | Fails | Lc -56.8 | Large or bold text, headings |
| Black text on #999DBE | 7.92:1 | AAA | Lc 52.4 | Large or bold text, headings |
| #999DBE text on white | 2.65:1 | Fails | Lc 51.6 | Large or bold text, headings |
| #999DBE text on black | 7.92:1 | AAA | Lc -50.3 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D8E4
oklch(88.4% 0.017 278.5)
-
Step 300
300
#BCBFD4
oklch(80.9% 0.03 279.3)
-
Step 400
400 (this color)
#999DBE
oklch(70.4% 0.048 279.6)
-
Step 500
500
#8186AF
oklch(63.1% 0.062 279.1)
-
Step 600
600
#6B6F9A
oklch(55.5% 0.067 279.9)
-
Step 700
700
#595D84
oklch(49.1% 0.063 279.3)
-
Step 800
800
#494C6B
oklch(42.7% 0.051 279.7)
-
Step 900
900
#3D3F57
oklch(37.6% 0.041 280.5)
-
Step 950
950
#242533
oklch(27% 0.026 281.3)
#999DBE 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) | #94A0C0 | 0.010 |
| Deuteranopia (no green cones) | #939EBD | 0.009 |
| Tritanopia (no blue cones) | #91A3A8 | 0.043 |
| Achromatopsia (no color) | #9F9F9F | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999DBE
#999DBE
oklch(70.4% 0.048 279.6)
- #A7A17E
#A7A17E
oklch(70.5% 0.049 99.4)
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 #999DBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.030
- Bluey Grey #89A0B0 ΔE 0.034
- Cool Steel #97A7B3 ΔE 0.037
- Bluegrey #85A3B2 ΔE 0.039
- Cool Grey #95A3A6 ΔE 0.045
- Greyblue #77A1B5 ΔE 0.048
- Dark Gray #A9A9A9 ΔE 0.057
- Pewter #96A8A1 ΔE 0.061
Use #999DBE 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.