#51897B
Closest named color: Dusty Teal (#4C9085). oklch(58.7% 0.064 176.2), rgb(81, 137, 123).
Aa
Black text reads best on this color (5.21:1).
About this color
#51897B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 59%, its chroma 0.064 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.021 away. Black text reads best on it, at 5.21:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.21:1 |
| White text | 4.02:1 |
Values
| HEX | #51897B |
| RGB | rgb(81, 137, 123) |
| HSL | hsl(165, 26%, 43%) |
| OKLCH | oklch(58.7% 0.064 176.2) |
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 #51897B | 4.02:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #51897B | 5.21:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #51897B text on white | 4.02:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #51897B text on black | 5.21:1 | AA | Lc -34.2 | Non-text elements, placeholder text |
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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CFDDD9
oklch(88.6% 0.016 177)
-
Step 300
300
#AEC7C0
oklch(80.9% 0.029 176.9)
-
Step 400
400
#83AA9F
oklch(70.6% 0.045 175.8)
-
Step 500
500
#629588
oklch(63% 0.058 176.5)
-
Step 600
600 (this color)
#51897B
oklch(58.7% 0.064 176.2)
-
Step 700
700
#396C5F
oklch(49.1% 0.059 175.3)
-
Step 800
800
#30584E
oklch(42.8% 0.049 175.9)
-
Step 900
900
#2B4841
oklch(37.6% 0.037 177.2)
-
Step 950
950
#192A26
oklch(26.9% 0.024 178)
#51897B 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) | #85837A | 0.066 |
| Deuteranopia (no green cones) | #7C7C7C | 0.064 |
| Tritanopia (no blue cones) | #3E8A85 | 0.020 |
| Achromatopsia (no color) | #7F7F7F | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51897B
#51897B
oklch(58.7% 0.064 176.2)
- #9C6D7D
#9C6D7D
oklch(58.8% 0.063 357.1)
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 #51897B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.021
- Slate Green #658D6D ΔE 0.034
- Dark Cyan #008B8B ΔE 0.044
- Sea #3C9992 ΔE 0.049
- Teal Green #0A9396 ΔE 0.050
- Dark Sage #598556 ΔE 0.050
- Steel Grey #6F828A ΔE 0.051
- Battleship Grey #6B7C85 ΔE 0.054
Use #51897B 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.