#2B4744
Closest named color: Charcoal (#264653). oklch(37.5% 0.034 187.3), rgb(43, 71, 68).
Aa
White text reads best on this color (10.05:1).
About this color
#2B4744 is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.034 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.028 away. White text reads best on it, at 10.05:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.08:1 |
| White text | 10.05:1 |
Values
| HEX | #2B4744 |
| RGB | rgb(43, 71, 68) |
| HSL | hsl(174, 25%, 22%) |
| OKLCH | oklch(37.5% 0.034 187.3) |
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 #2B4744 | 10.05:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #2B4744 | 2.08:1 | Fails | Lc 10.6 | Not readable |
| #2B4744 text on white | 10.05:1 | AAA | Lc 93.3 | Preferred for body text |
| #2B4744 text on black | 2.08:1 | Fails | Lc -9.2 | 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
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#CFDCDB
oklch(88.4% 0.014 191.4)
-
Step 300
300
#AFC6C3
oklch(80.8% 0.025 187.2)
-
Step 400
400
#84A9A5
oklch(70.6% 0.041 188.1)
-
Step 500
500
#64948F
oklch(63.1% 0.052 187.7)
-
Step 600
600
#4A7E79
oklch(55.5% 0.057 187.8)
-
Step 700
700
#3B6B66
oklch(49.2% 0.053 187)
-
Step 800
800
#315753
oklch(42.7% 0.044 187.1)
-
Step 900
900 (this color)
#2B4744
oklch(37.5% 0.034 187.3)
-
Step 950
950
#1A2A28
oklch(27% 0.022 186.2)
#2B4744 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) | #444444 | 0.036 |
| Deuteranopia (no green cones) | #3F4044 | 0.035 |
| Tritanopia (no blue cones) | #214846 | 0.011 |
| Achromatopsia (no color) | #424242 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4744
#2B4744
oklch(37.5% 0.034 187.3)
- #51393E
#51393E
oklch(37.3% 0.035 5.1)
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 #2B4744, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.028
- Charcoal Grey #3C4142 ΔE 0.028
- Dark Slate Gray #2F4F4F ΔE 0.029
- Dark Teal #014D4E ΔE 0.032
- Dark Blue Green #005249 ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.041
- Onyx #343A40 ΔE 0.042
- Deep Teal #00555A ΔE 0.051
Use #2B4744 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.