#2D4755
Closest named color: Charcoal (#264653). oklch(38.3% 0.04 232.7), rgb(45, 71, 85).
Aa
White text reads best on this color (9.79:1).
About this color
#2D4755 is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.040 and its hue 233°. 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 9.79:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.14:1 |
| White text | 9.79:1 |
Values
| HEX | #2D4755 |
| RGB | rgb(45, 71, 85) |
| HSL | hsl(201, 31%, 25%) |
| OKLCH | oklch(38.3% 0.04 232.7) |
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 #2D4755 | 9.79:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #2D4755 | 2.14:1 | Fails | Lc 11.3 | Not readable |
| #2D4755 text on white | 9.79:1 | AAA | Lc 92.7 | Preferred for body text |
| #2D4755 text on black | 2.14:1 | Fails | Lc -9.8 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE2
oklch(88.4% 0.016 233)
-
Step 300
300
#AEC4D1
oklch(80.8% 0.03 233.7)
-
Step 400
400
#83A6BA
oklch(70.6% 0.048 233.4)
-
Step 500
500
#6490A9
oklch(63.1% 0.061 233.9)
-
Step 600
600
#4A7A94
oklch(55.6% 0.066 233.4)
-
Step 700
700
#3A677E
oklch(49.1% 0.062 232.2)
-
Step 800
800
#315466
oklch(42.7% 0.05 232)
-
Step 900
900 (this color)
#2D4755
oklch(38.3% 0.04 232.7)
-
Step 950
950
#1A2931
oklch(27.1% 0.025 232.2)
#2D4755 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) | #404656 | 0.027 |
| Deuteranopia (no green cones) | #3B4255 | 0.024 |
| Tritanopia (no blue cones) | #1C4B4B | 0.031 |
| Achromatopsia (no color) | #444444 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4755
#2D4755
oklch(38.3% 0.04 232.7)
- #543D2F
#543D2F
oklch(38.2% 0.04 52.5)
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 #2D4755, 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 0.013
- Dark Slate Gray #2F4F4F ΔE 0.032
- Charcoal Grey #3C4142 ΔE 0.035
- Dark Teal #014D4E ΔE 0.040
- Dark Blue Grey #1F3B4D ΔE 0.045
- Onyx #343A40 ΔE 0.047
- Deep Teal #00555A ΔE 0.049
Use #2D4755 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.