#999BC6
Closest named color: Cool Gray (#8D99AE). oklch(70.3% 0.063 282.6), rgb(153, 155, 198).
Aa
Black text reads best on this color (7.85:1).
About this color
#999BC6 is a medium-light, muted purple. In OKLCH its lightness is 70%, its chroma 0.063 and its hue 283°. 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 7.85:1.
| Hue family | Purples |
| Lightness | medium-light (70%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.85:1 |
| White text | 2.67:1 |
Values
| HEX | #999BC6 |
| RGB | rgb(153, 155, 198) |
| HSL | hsl(237, 28%, 69%) |
| OKLCH | oklch(70.3% 0.063 282.6) |
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 #999BC6 | 2.67:1 | Fails | Lc -57.1 | Large or bold text, headings |
| Black text on #999BC6 | 7.85:1 | AAA | Lc 52.1 | Large or bold text, headings |
| #999BC6 text on white | 2.67:1 | Fails | Lc 51.9 | Large or bold text, headings |
| #999BC6 text on black | 7.85:1 | AAA | Lc -49.9 | 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
#D6D8E8
oklch(88.5% 0.022 280.3)
-
Step 300
300
#BCBEDA
oklch(80.9% 0.039 282.2)
-
Step 400
400 (this color)
#999BC6
oklch(70.3% 0.063 282.6)
-
Step 500
500
#8283B9
oklch(63% 0.081 283)
-
Step 600
600
#6C6CA5
oklch(55.5% 0.088 283.2)
-
Step 700
700
#5A5A8D
oklch(49% 0.081 283)
-
Step 800
800
#494A73
oklch(42.7% 0.068 282.1)
-
Step 900
900
#3D3E5D
oklch(37.7% 0.053 282.1)
-
Step 950
950
#242436
oklch(26.9% 0.033 283.9)
#999BC6 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) | #90A0C8 | 0.017 |
| Deuteranopia (no green cones) | #8E9DC5 | 0.016 |
| Tritanopia (no blue cones) | #8FA2AA | 0.054 |
| Achromatopsia (no color) | #9E9E9E | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999BC6
#999BC6
oklch(70.3% 0.063 282.6)
- #A6A174
#A6A174
oklch(70.2% 0.062 102.5)
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 #999BC6, 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 0.046
- Cool Steel #97A7B3 ΔE 0.050
- Bluegrey #85A3B2 ΔE 0.050
- Greyblue #77A1B5 ΔE 0.056
- Pale Purple #B790D4 ΔE 0.058
- Cool Grey #95A3A6 ΔE 0.059
- Heather #A484AC ΔE 0.062
Use #999BC6 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.