#51767D
Closest named color: Metallic Blue (#4F738E). oklch(54.1% 0.043 210.6), rgb(81, 118, 125).
Aa
White text reads best on this color (4.95:1).
About this color
#51767D is a medium-dark, muted teal or cyan. In OKLCH its lightness is 54%, its chroma 0.043 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.031 away. White text reads best on it, at 4.95:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.23:1 |
| White text | 4.95:1 |
Values
| HEX | #51767D |
| RGB | rgb(81, 118, 125) |
| HSL | hsl(190, 21%, 40%) |
| OKLCH | oklch(54.1% 0.043 210.6) |
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 #51767D | 4.95:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #51767D | 4.23:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #51767D text on white | 4.95:1 | AA | Lc 74.3 | Content text, not long reading |
| #51767D text on black | 4.23:1 | AA large text | Lc -27.4 | 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 600.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D1DBDD
oklch(88.4% 0.011 211)
-
Step 300
300
#B3C4C8
oklch(80.9% 0.019 213.4)
-
Step 400
400
#8BA6AB
oklch(70.6% 0.031 210.1)
-
Step 500
500
#6E9097
oklch(63% 0.039 211.7)
-
Step 600
600 (this color)
#51767D
oklch(54.1% 0.043 210.6)
-
Step 700
700
#45676E
oklch(49.1% 0.041 211.9)
-
Step 800
800
#395459
oklch(42.6% 0.033 210.3)
-
Step 900
900
#324549
oklch(37.6% 0.025 212)
-
Step 950
950
#1D292B
oklch(27.1% 0.017 208.8)
#51767D 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) | #70737D | 0.041 |
| Deuteranopia (no green cones) | #686E7D | 0.036 |
| Tritanopia (no blue cones) | #417978 | 0.022 |
| Achromatopsia (no color) | #707070 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51767D
#51767D
oklch(54.1% 0.043 210.6)
- #866660
#866660
oklch(54.1% 0.043 30.6)
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 #51767D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.031
- Battleship Gray #6C757D ΔE 0.035
- Grey Blue #647D8E ΔE 0.041
- Battleship Grey #6B7C85 ΔE 0.041
- Stormy Blue #507B9C ΔE 0.047
- Dim Gray #696969 ΔE 0.047
- Cerulean #457B9D ΔE 0.048
- Deep Aqua #08787F ΔE 0.049
Use #51767D 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.