#51909C
Closest named color: Dusty Teal (#4C9085). oklch(61.6% 0.067 211.2), rgb(81, 144, 156).
Aa
Black text reads best on this color (5.81:1).
About this color
#51909C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 62%, its chroma 0.067 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.037 away. Black text reads best on it, at 5.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.81:1 |
| White text | 3.60:1 |
Values
| HEX | #51909C |
| RGB | rgb(81, 144, 156) |
| HSL | hsl(190, 32%, 46%) |
| OKLCH | oklch(61.6% 0.067 211.2) |
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 #51909C | 3.60:1 | AA large text | Lc -69.0 | Content text, not long reading |
| Black text on #51909C | 5.81:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #51909C text on white | 3.60:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #51909C text on black | 5.81:1 | AA | Lc -38.1 | 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 500.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CCDDE0
oklch(88.6% 0.019 209.4)
-
Step 300
300
#A9C7CD
oklch(80.9% 0.033 211.1)
-
Step 400
400
#7AAAB3
oklch(70.7% 0.053 210.4)
-
Step 500
500 (this color)
#51909C
oklch(61.6% 0.067 211.2)
-
Step 600
600
#387F8C
oklch(55.7% 0.073 211.3)
-
Step 700
700
#296B77
oklch(49.1% 0.068 211.6)
-
Step 800
800
#245761
oklch(42.7% 0.056 212.4)
-
Step 900
900
#23484F
oklch(37.7% 0.044 211.3)
-
Step 950
950
#152A2E
oklch(26.9% 0.028 211.1)
#51909C 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) | #868C9D | 0.063 |
| Deuteranopia (no green cones) | #7A839C | 0.058 |
| Tritanopia (no blue cones) | #299594 | 0.036 |
| Achromatopsia (no color) | #878787 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51909C
#51909C
oklch(61.6% 0.067 211.2)
- #AA766C
#AA766C
oklch(61.6% 0.068 31.2)
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 #51909C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.037
- Sea #3C9992 ΔE 0.038
- Teal Green #0A9396 ΔE 0.041
- Blue Grey #758DA3 ΔE 0.044
- Cadet Blue #5F9EA0 ΔE 0.045
- Steel #738595 ΔE 0.045
- Light Slate Gray #778899 ΔE 0.046
- Dusty Blue #5A86AD ΔE 0.046
Use #51909C 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.