#51596B
Closest named color: Dusty Grape (#545775). oklch(46.4% 0.031 266.3), rgb(81, 89, 107).
Aa
White text reads best on this color (7.02:1).
About this color
#51596B is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.031 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.020 away. White text reads best on it, at 7.02:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.99:1 |
| White text | 7.02:1 |
Values
| HEX | #51596B |
| RGB | rgb(81, 89, 107) |
| HSL | hsl(222, 14%, 37%) |
| OKLCH | oklch(46.4% 0.031 266.3) |
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 #51596B | 7.02:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #51596B | 2.99:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #51596B text on white | 7.02:1 | AAA | Lc 84.3 | Fine for body text |
| #51596B text on black | 2.99:1 | Fails | Lc -17.6 | Dividers and decoration only |
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 700.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D6D9DF
oklch(88.5% 0.009 264.5)
-
Step 300
300
#BCC1CB
oklch(81% 0.015 264.5)
-
Step 400
400
#9AA1B0
oklch(70.8% 0.023 265.7)
-
Step 500
500
#81899D
oklch(63% 0.031 268.2)
-
Step 600
600
#6A7387
oklch(55.5% 0.033 266.1)
-
Step 700
700 (this color)
#51596B
oklch(46.4% 0.031 266.3)
-
Step 800
800
#484F5E
oklch(42.7% 0.027 265.5)
-
Step 900
900
#3D424D
oklch(37.9% 0.02 266)
-
Step 950
950
#24262D
oklch(27% 0.013 272.9)
#51596B 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) | #535A6C | 0.005 |
| Deuteranopia (no green cones) | #51586B | 0.003 |
| Tritanopia (no blue cones) | #4A5C5F | 0.027 |
| Achromatopsia (no color) | #595959 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51596B
#51596B
oklch(46.4% 0.031 266.3)
- #615845
#615845
oklch(46.4% 0.032 85.6)
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 #51596B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.020
- YInMn Blue #415A77 ΔE 0.028
- Slate #516572 ΔE 0.035
- Dusk #4E5481 ΔE 0.044
- Denim #3B638C ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.061
- Twilight #4E518B ΔE 0.064
- Dim Gray #696969 ΔE 0.065
Use #51596B 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.