#999EC6
Closest named color: Cool Gray (#8D99AE). oklch(70.9% 0.059 279.2), rgb(153, 158, 198).
Aa
Black text reads best on this color (8.06:1).
About this color
#999EC6 is a medium-light, muted blue. In OKLCH its lightness is 71%, its chroma 0.059 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.040 away. Black text reads best on it, at 8.06:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 8.06:1 |
| White text | 2.60:1 |
Values
| HEX | #999EC6 |
| RGB | rgb(153, 158, 198) |
| HSL | hsl(233, 28%, 69%) |
| OKLCH | oklch(70.9% 0.059 279.2) |
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 #999EC6 | 2.60:1 | Fails | Lc -56.0 | Large or bold text, headings |
| Black text on #999EC6 | 8.06:1 | AAA | Lc 53.2 | Large or bold text, headings |
| #999EC6 text on white | 2.60:1 | Fails | Lc 50.9 | Large or bold text, headings |
| #999EC6 text on black | 8.06:1 | AAA | Lc -51.0 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E7
oklch(88.5% 0.021 279.9)
-
Step 300
300
#BBBFD9
oklch(81% 0.037 278.6)
-
Step 400
400 (this color)
#999EC6
oklch(70.9% 0.059 279.2)
-
Step 500
500
#8085B7
oklch(63.2% 0.075 279.6)
-
Step 600
600
#696EA2
oklch(55.5% 0.081 279.2)
-
Step 700
700
#585C8B
oklch(49.2% 0.075 279.5)
-
Step 800
800
#484B71
oklch(42.7% 0.063 279.9)
-
Step 900
900
#3C3F5B
oklch(37.7% 0.048 279.1)
-
Step 950
950
#232535
oklch(27% 0.03 278.7)
#999EC6 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) | #93A2C8 | 0.012 |
| Deuteranopia (no green cones) | #919FC5 | 0.011 |
| Tritanopia (no blue cones) | #8FA5AB | 0.052 |
| Achromatopsia (no color) | #A0A0A0 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999EC6
#999EC6
oklch(70.9% 0.059 279.2)
- #AAA278
#AAA278
oklch(70.8% 0.058 98.6)
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 #999EC6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.040
- Bluey Grey #89A0B0 ΔE 0.042
- Cool Steel #97A7B3 ΔE 0.043
- Bluegrey #85A3B2 ΔE 0.046
- Greyblue #77A1B5 ΔE 0.054
- Cool Grey #95A3A6 ΔE 0.054
- Pale Purple #B790D4 ΔE 0.063
- Dark Gray #A9A9A9 ΔE 0.064
Use #999EC6 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.