#2D4751
Closest named color: Charcoal (#264653). oklch(38.1% 0.036 224.2), rgb(45, 71, 81).
Aa
White text reads best on this color (9.85:1).
About this color
#2D4751 is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.036 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.010 away. White text reads best on it, at 9.85:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.13:1 |
| White text | 9.85:1 |
Values
| HEX | #2D4751 |
| RGB | rgb(45, 71, 81) |
| HSL | hsl(197, 29%, 25%) |
| OKLCH | oklch(38.1% 0.036 224.2) |
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 #2D4751 | 9.85:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #2D4751 | 2.13:1 | Fails | Lc 11.1 | Not readable |
| #2D4751 text on white | 9.85:1 | AAA | Lc 92.8 | Preferred for body text |
| #2D4751 text on black | 2.13:1 | Fails | Lc -9.7 | 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
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#CFDBE0
oklch(88.4% 0.015 224.5)
-
Step 300
300
#AFC5CE
oklch(81% 0.027 224.3)
-
Step 400
400
#84A7B5
oklch(70.7% 0.043 224.3)
-
Step 500
500
#6491A2
oklch(63% 0.055 223.5)
-
Step 600
600
#4A7B8E
oklch(55.6% 0.061 224.8)
-
Step 700
700
#3B6878
oklch(49.1% 0.056 223)
-
Step 800
800
#315562
oklch(42.8% 0.047 223.2)
-
Step 900
900 (this color)
#2D4751
oklch(38.1% 0.036 224.2)
-
Step 950
950
#1A292F
oklch(27% 0.023 224.8)
#2D4751 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) | #414652 | 0.028 |
| Deuteranopia (no green cones) | #3C4151 | 0.027 |
| Tritanopia (no blue cones) | #1F4A4A | 0.024 |
| Achromatopsia (no color) | #434343 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4751
#2D4751
oklch(38.1% 0.036 224.2)
- #533D33
#533D33
oklch(38.1% 0.035 45.6)
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 #2D4751, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.010
- Dark Grey Blue #29465B ΔE 0.019
- Dark Slate Gray #2F4F4F ΔE 0.028
- Charcoal Grey #3C4142 ΔE 0.031
- Dark Teal #014D4E ΔE 0.037
- Onyx #343A40 ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.045
- Deep Teal #00555A ΔE 0.048
Use #2D4751 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.