#2B4C4E
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.2% 0.039 200.7), rgb(43, 76, 78).
Aa
White text reads best on this color (9.34:1).
About this color
#2B4C4E is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.039 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.011 away. White text reads best on it, at 9.34:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.24:1 |
| White text | 9.34:1 |
Values
| HEX | #2B4C4E |
| RGB | rgb(43, 76, 78) |
| HSL | hsl(183, 29%, 24%) |
| OKLCH | oklch(39.2% 0.039 200.7) |
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 #2B4C4E | 9.34:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #2B4C4E | 2.24:1 | Fails | Lc 12.4 | Not readable |
| #2B4C4E text on white | 9.34:1 | AAA | Lc 91.5 | Preferred for body text |
| #2B4C4E text on black | 2.24:1 | Fails | Lc -10.9 | Not readable |
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 900.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CEDDDD
oklch(88.6% 0.016 196.9)
-
Step 300
300
#ACC7C8
oklch(81% 0.029 199.3)
-
Step 400
400
#7FAAAC
oklch(70.8% 0.046 199.7)
-
Step 500
500
#5C9598
oklch(63.2% 0.06 200)
-
Step 600
600
#407F83
oklch(55.6% 0.065 200.9)
-
Step 700
700
#326B6F
oklch(49.1% 0.06 201.5)
-
Step 800
800
#2A575A
oklch(42.6% 0.05 201.2)
-
Step 900
900 (this color)
#2B4C4E
oklch(39.2% 0.039 200.7)
-
Step 950
950
#172A2B
oklch(26.9% 0.025 200)
#2B4C4E 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) | #48494E | 0.040 |
| Deuteranopia (no green cones) | #42454E | 0.037 |
| Tritanopia (no blue cones) | #1B4E4C | 0.017 |
| Achromatopsia (no color) | #474747 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4C4E
#2B4C4E
oklch(39.2% 0.039 200.7)
- #593D3D
#593D3D
oklch(39.2% 0.04 19)
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 #2B4C4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.011
- Charcoal #264653 ΔE 0.025
- Dark Teal #014D4E ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.035
- Deep Teal #00555A ΔE 0.035
- Dark Blue Green #005249 ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.038
- Onyx #343A40 ΔE 0.057
Use #2B4C4E 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.