#2D4553
Closest named color: Charcoal (#264653). oklch(37.7% 0.038 234.8), rgb(45, 69, 83).
Aa
White text reads best on this color (10.05:1).
About this color
#2D4553 is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.038 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.008 away. White text reads best on it, at 10.05:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.08:1 |
| White text | 10.05:1 |
Values
| HEX | #2D4553 |
| RGB | rgb(45, 69, 83) |
| HSL | hsl(202, 30%, 25%) |
| OKLCH | oklch(37.7% 0.038 234.8) |
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 #2D4553 | 10.05:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #2D4553 | 2.08:1 | Fails | Lc 10.6 | Not readable |
| #2D4553 text on white | 10.05:1 | AAA | Lc 93.3 | Preferred for body text |
| #2D4553 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE2
oklch(88.5% 0.015 235.4)
-
Step 300
300
#B0C4D1
oklch(80.9% 0.029 236.3)
-
Step 400
400
#85A6B9
oklch(70.7% 0.046 233.5)
-
Step 500
500
#6690A8
oklch(63.2% 0.059 234)
-
Step 600
600
#4D7A93
oklch(55.7% 0.063 233.8)
-
Step 700
700
#3D667E
oklch(49% 0.06 235.5)
-
Step 800
800
#335366
oklch(42.6% 0.049 235.7)
-
Step 900
900 (this color)
#2D4553
oklch(37.7% 0.038 234.8)
-
Step 950
950
#1B2831
oklch(26.9% 0.025 239.1)
#2D4553 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) | #3E4454 | 0.024 |
| Deuteranopia (no green cones) | #394053 | 0.022 |
| Tritanopia (no blue cones) | #1E494A | 0.029 |
| Achromatopsia (no color) | #424242 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4553
#2D4553
oklch(37.7% 0.038 234.8)
- #523C2E
#523C2E
oklch(37.7% 0.039 53.7)
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 #2D4553, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.008
- Dark Grey Blue #29465B ΔE 0.014
- Charcoal Grey #3C4142 ΔE 0.032
- Dark Slate Gray #2F4F4F ΔE 0.036
- Dark Blue Grey #1F3B4D ΔE 0.039
- Onyx #343A40 ΔE 0.041
- Dark Teal #014D4E ΔE 0.042
- Midnight Green #073B4C ΔE 0.052
Use #2D4553 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.