#51ABB0
Closest named color: Light Sea Green (#20B2AA). oklch(68.8% 0.086 200.2), rgb(81, 171, 176).
Aa
Black text reads best on this color (7.80:1).
About this color
#51ABB0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.086 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.034 away. Black text reads best on it, at 7.80:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 7.80:1 |
| White text | 2.69:1 |
Values
| HEX | #51ABB0 |
| RGB | rgb(81, 171, 176) |
| HSL | hsl(183, 38%, 50%) |
| OKLCH | oklch(68.8% 0.086 200.2) |
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 #51ABB0 | 2.69:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #51ABB0 | 7.80:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #51ABB0 text on white | 2.69:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #51ABB0 text on black | 7.80:1 | AAA | Lc -49.8 | 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
#F0F7F7
oklch(97.1% 0.007 197)
-
Step 100
100
#DFEDEE
oklch(93.6% 0.015 202)
-
Step 200
200
#C3DFE1
oklch(88.4% 0.03 201.9)
-
Step 300
300
#98CCCE
oklch(81% 0.054 199.1)
-
Step 400
400 (this color)
#51ABB0
oklch(68.8% 0.086 200.2)
-
Step 500
500
#009CA3
oklch(63% 0.107 200.4)
-
Step 600
600
#008389
oklch(55.5% 0.094 200.5)
-
Step 700
700
#006F73
oklch(49.2% 0.084 199.2)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004C4F
oklch(37.8% 0.064 199.4)
-
Step 950
950
#012D2F
oklch(27% 0.045 199.5)
#51ABB0 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) | #A0A4B0 | 0.087 |
| Deuteranopia (no green cones) | #9199B1 | 0.082 |
| Tritanopia (no blue cones) | #00B0AC | 0.035 |
| Achromatopsia (no color) | #9E9E9E | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51ABB0
#51ABB0
oklch(68.8% 0.086 200.2)
- #CB8585
#CB8585
oklch(68.8% 0.087 19.5)
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 #51ABB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.034
- Turquoise Blue #06B1C4 ΔE 0.037
- Cadet Blue #5F9EA0 ΔE 0.037
- Greyblue #77A1B5 ΔE 0.046
- Dull Teal #5F9E8F ΔE 0.051
- Topaz #13BBAF ΔE 0.051
- Greeny Blue #42B395 ΔE 0.054
- Bluegrey #85A3B2 ΔE 0.056
Use #51ABB0 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.