#2A4353
Closest named color: Charcoal (#264653). oklch(37% 0.041 237.5), rgb(42, 67, 83).
Aa
White text reads best on this color (10.36:1).
About this color
#2A4353 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.041 and its hue 237°. 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 10.36:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.02:1 |
| White text | 10.36:1 |
Values
| HEX | #2A4353 |
| RGB | rgb(42, 67, 83) |
| HSL | hsl(203, 33%, 25%) |
| OKLCH | oklch(37% 0.041 237.5) |
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 #2A4353 | 10.36:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #2A4353 | 2.02:1 | Fails | Lc 9.9 | Not readable |
| #2A4353 text on white | 10.36:1 | AAA | Lc 94.0 | Preferred for body text |
| #2A4353 text on black | 2.02:1 | Fails | Lc -8.6 | 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
#CFDBE3
oklch(88.5% 0.017 236.7)
-
Step 300
300
#AFC4D3
oklch(80.9% 0.031 238.9)
-
Step 400
400
#84A6BC
oklch(70.8% 0.049 236.8)
-
Step 500
500
#6490AC
oklch(63.2% 0.064 237.1)
-
Step 600
600
#4B7997
oklch(55.5% 0.069 238.3)
-
Step 700
700
#3B6681
oklch(49.1% 0.065 237.6)
-
Step 800
800
#325369
oklch(42.7% 0.053 238.9)
-
Step 900
900 (this color)
#2A4353
oklch(37% 0.041 237.5)
-
Step 950
950
#1A2832
oklch(26.9% 0.027 240.1)
#2A4353 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) | #3C4354 | 0.025 |
| Deuteranopia (no green cones) | #363E53 | 0.022 |
| Tritanopia (no blue cones) | #184748 | 0.033 |
| Achromatopsia (no color) | #404040 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A4353
#2A4353
oklch(37% 0.041 237.5)
- #513A2A
#513A2A
oklch(37% 0.042 55.9)
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 #2A4353, 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 0.015
- Dark Blue Grey #1F3B4D ΔE 0.031
- Charcoal Grey #3C4142 ΔE 0.035
- Onyx #343A40 ΔE 0.038
- Dark Slate Gray #2F4F4F ΔE 0.044
- Dark Teal #014D4E ΔE 0.045
- Midnight Green #073B4C ΔE 0.045
Use #2A4353 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.