#2B5963
Closest named color: Petrol (#005F6A). oklch(43.6% 0.053 213.7), rgb(43, 89, 99).
Aa
White text reads best on this color (7.74:1).
About this color
#2B5963 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.053 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.026 away. White text reads best on it, at 7.74:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.71:1 |
| White text | 7.74:1 |
Values
| HEX | #2B5963 |
| RGB | rgb(43, 89, 99) |
| HSL | hsl(191, 39%, 28%) |
| OKLCH | oklch(43.6% 0.053 213.7) |
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 #2B5963 | 7.74:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #2B5963 | 2.71:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #2B5963 text on white | 7.74:1 | AAA | Lc 86.8 | Fine for body text |
| #2B5963 text on black | 2.71:1 | Fails | Lc -15.3 | 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 800.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CDDCE0
oklch(88.4% 0.017 215.5)
-
Step 300
300
#ABC6CD
oklch(80.9% 0.031 215.1)
-
Step 400
400
#7DA9B3
oklch(70.7% 0.049 213.3)
-
Step 500
500
#5A94A1
oklch(63.2% 0.064 213.6)
-
Step 600
600
#3E7E8C
oklch(55.7% 0.069 213.8)
-
Step 700
700
#2F6A77
oklch(49.1% 0.064 214.3)
-
Step 800
800 (this color)
#2B5963
oklch(43.6% 0.053 213.7)
-
Step 900
900
#26474F
oklch(37.6% 0.041 215.1)
-
Step 950
950
#172A2E
oklch(27.1% 0.026 212.5)
#2B5963 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) | #515664 | 0.048 |
| Deuteranopia (no green cones) | #495063 | 0.044 |
| Tritanopia (no blue cones) | #015D5C | 0.030 |
| Achromatopsia (no color) | #535353 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5963
#2B5963
oklch(43.6% 0.053 213.7)
- #6B473E
#6B473E
oklch(43.6% 0.052 34.6)
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 #2B5963, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.026
- Deep Teal #00555A ΔE 0.034
- Dark Slate Gray #2F4F4F ΔE 0.039
- YInMn Blue #415A77 ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.044
- Dark Aqua #05696B ΔE 0.049
- Dark Blue Green #005249 ΔE 0.056
- Dark Teal #014D4E ΔE 0.059
Use #2B5963 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.