#2B4E4F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.8% 0.041 198), rgb(43, 78, 79).
Aa
White text reads best on this color (9.10:1).
About this color
#2B4E4F is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.041 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.006 away. White text reads best on it, at 9.10:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.30:1 |
| White text | 9.10:1 |
Values
| HEX | #2B4E4F |
| RGB | rgb(43, 78, 79) |
| HSL | hsl(182, 30%, 24%) |
| OKLCH | oklch(39.8% 0.041 198) |
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 #2B4E4F | 9.10:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #2B4E4F | 2.30:1 | Fails | Lc 13.1 | Not readable |
| #2B4E4F text on white | 9.10:1 | AAA | Lc 90.9 | Preferred for body text |
| #2B4E4F text on black | 2.30:1 | Fails | Lc -11.4 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CDDDDD
oklch(88.6% 0.017 196.8)
-
Step 300
300
#ABC7C8
oklch(80.9% 0.03 199.2)
-
Step 400
400
#7DAAAB
oklch(70.6% 0.048 197.8)
-
Step 500
500
#5A9597
oklch(63% 0.062 198.5)
-
Step 600
600
#3D8082
oklch(55.7% 0.068 198)
-
Step 700
700
#2E6C6E
oklch(49.2% 0.063 198.2)
-
Step 800
800
#285859
oklch(42.8% 0.052 197.2)
-
Step 900
900 (this color)
#2B4E4F
oklch(39.8% 0.041 198)
-
Step 950
950
#172A2B
oklch(26.9% 0.025 200)
#2B4E4F 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) | #4A4B4F | 0.043 |
| Deuteranopia (no green cones) | #43464F | 0.039 |
| Tritanopia (no blue cones) | #1A504E | 0.016 |
| Achromatopsia (no color) | #484848 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4E4F
#2B4E4F
oklch(39.8% 0.041 198)
- #5B3E3F
#5B3E3F
oklch(39.7% 0.041 16.8)
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 #2B4E4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.006
- Dark Teal #014D4E ΔE 0.029
- Charcoal #264653 ΔE 0.031
- Deep Teal #00555A ΔE 0.031
- Dark Blue Green #005249 ΔE 0.033
- Dark Grey Blue #29465B ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.043
- Petrol #005F6A ΔE 0.059
Use #2B4E4F 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.