#999BBE
Closest named color: Cool Gray (#8D99AE). oklch(70% 0.051 282.4), rgb(153, 155, 190).
Aa
Black text reads best on this color (7.78:1).
About this color
#999BBE is a medium-light, muted purple. In OKLCH its lightness is 70%, its chroma 0.051 and its hue 282°. 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 7.78:1.
| Hue family | Purples |
| Lightness | medium-light (70%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.78:1 |
| White text | 2.69:1 |
Values
| HEX | #999BBE |
| RGB | rgb(153, 155, 190) |
| HSL | hsl(237, 22%, 67%) |
| OKLCH | oklch(70% 0.051 282.4) |
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 #999BBE | 2.69:1 | Fails | Lc -57.5 | Large or bold text, headings |
| Black text on #999BBE | 7.78:1 | AAA | Lc 51.7 | Large or bold text, headings |
| #999BBE text on white | 2.69:1 | Fails | Lc 52.3 | Large or bold text, headings |
| #999BBE text on black | 7.78:1 | AAA | Lc -49.5 | 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
#E9E9F0
oklch(93.6% 0.009 286.2)
-
Step 200
200
#D7D8E5
oklch(88.5% 0.018 282.5)
-
Step 300
300
#BDBFD5
oklch(81% 0.031 281.6)
-
Step 400
400 (this color)
#999BBE
oklch(70% 0.051 282.4)
-
Step 500
500
#8385B0
oklch(63.1% 0.064 282.3)
-
Step 600
600
#6D6E9C
oklch(55.6% 0.071 282.9)
-
Step 700
700
#5B5C85
oklch(49.1% 0.065 282.6)
-
Step 800
800
#4A4B6C
oklch(42.6% 0.054 282.5)
-
Step 900
900
#3E3F58
oklch(37.8% 0.043 282.4)
-
Step 950
950
#242533
oklch(27% 0.026 281.3)
#999BBE 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) | #929FC0 | 0.013 |
| Deuteranopia (no green cones) | #919CBD | 0.011 |
| Tritanopia (no blue cones) | #91A1A7 | 0.045 |
| Achromatopsia (no color) | #9D9D9D | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999BBE
#999BBE
oklch(70% 0.051 282.4)
- #A4A07B
#A4A07B
oklch(69.9% 0.052 102.5)
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 #999BBE, 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 0.036
- Cool Steel #97A7B3 ΔE 0.042
- Bluegrey #85A3B2 ΔE 0.042
- Cool Grey #95A3A6 ΔE 0.048
- Greyblue #77A1B5 ΔE 0.050
- Dusty Lavender #AC86A8 ΔE 0.059
- Heather #A484AC ΔE 0.060
Use #999BBE 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.