#2B5B4E
Closest named color: Dark Green Blue (#1F6357). oklch(43.3% 0.057 173.6), rgb(43, 91, 78).
Aa
White text reads best on this color (7.75:1).
About this color
#2B5B4E is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.057 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.025 away. White text reads best on it, at 7.75:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #2B5B4E |
| RGB | rgb(43, 91, 78) |
| HSL | hsl(164, 36%, 26%) |
| OKLCH | oklch(43.3% 0.057 173.6) |
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 #2B5B4E | 7.75:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #2B5B4E | 2.70:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #2B5B4E text on white | 7.75:1 | AAA | Lc 86.8 | Fine for body text |
| #2B5B4E text on black | 2.70:1 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CDDDD8
oklch(88.4% 0.018 175.3)
-
Step 300
300
#ACC8BF
oklch(80.9% 0.033 174.1)
-
Step 400
400
#7EAC9E
oklch(70.7% 0.053 173.9)
-
Step 500
500
#5B9786
oklch(63% 0.068 174)
-
Step 600
600
#3F8270
oklch(55.7% 0.075 173.7)
-
Step 700
700
#306E5D
oklch(49.2% 0.07 172.8)
-
Step 800
800 (this color)
#2B5B4E
oklch(43.3% 0.057 173.6)
-
Step 900
900
#264940
oklch(37.6% 0.044 175.3)
-
Step 950
950
#172B25
oklch(27% 0.028 173)
#2B5B4E 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) | #58564D | 0.059 |
| Deuteranopia (no green cones) | #51504F | 0.058 |
| Tritanopia (no blue cones) | #175C57 | 0.018 |
| Achromatopsia (no color) | #535353 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5B4E
#2B5B4E
oklch(43.3% 0.057 173.6)
- #6A4353
#6A4353
oklch(43.3% 0.058 353.6)
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 #2B5B4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.025
- Dark Slate Gray #2F4F4F ΔE 0.040
- Deep Teal #00555A ΔE 0.041
- Pine #2B5D34 ΔE 0.043
- Dark Blue Green #005249 ΔE 0.043
- Petrol #005F6A ΔE 0.045
- Spruce #0A5F38 ΔE 0.048
- Dark Aqua #05696B ΔE 0.053
Use #2B5B4E 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.