#2B4954
Closest named color: Charcoal (#264653). oklch(38.7% 0.04 223.4), rgb(43, 73, 84).
Aa
White text reads best on this color (9.61:1).
About this color
#2B4954 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.040 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.012 away. White text reads best on it, at 9.61:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.18:1 |
| White text | 9.61:1 |
Values
| HEX | #2B4954 |
| RGB | rgb(43, 73, 84) |
| HSL | hsl(196, 32%, 25%) |
| OKLCH | oklch(38.7% 0.04 223.4) |
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 #2B4954 | 9.61:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #2B4954 | 2.18:1 | Fails | Lc 11.7 | Not readable |
| #2B4954 text on white | 9.61:1 | AAA | Lc 92.2 | Preferred for body text |
| #2B4954 text on black | 2.18:1 | Fails | Lc -10.2 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CEDCE1
oklch(88.5% 0.017 221.1)
-
Step 300
300
#ADC5CF
oklch(80.9% 0.03 224.8)
-
Step 400
400
#80A8B7
oklch(70.8% 0.049 222.9)
-
Step 500
500
#5F92A5
oklch(63.1% 0.061 223.5)
-
Step 600
600
#437C90
oklch(55.5% 0.067 223)
-
Step 700
700
#35697B
oklch(49.2% 0.062 223)
-
Step 800
800
#2C5564
oklch(42.6% 0.052 224)
-
Step 900
900 (this color)
#2B4954
oklch(38.7% 0.04 223.4)
-
Step 950
950
#182930
oklch(26.9% 0.026 225.8)
#2B4954 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) | #434855 | 0.033 |
| Deuteranopia (no green cones) | #3D4354 | 0.029 |
| Tritanopia (no blue cones) | #184C4C | 0.027 |
| Achromatopsia (no color) | #454545 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4954
#2B4954
oklch(38.7% 0.04 223.4)
- #573D33
#573D33
oklch(38.6% 0.04 41.9)
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 #2B4954, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.012
- Dark Grey Blue #29465B ΔE 0.018
- Dark Slate Gray #2F4F4F ΔE 0.025
- Dark Teal #014D4E ΔE 0.034
- Charcoal Grey #3C4142 ΔE 0.037
- Deep Teal #00555A ΔE 0.042
- Dark Blue Green #005249 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.050
Use #2B4954 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.