#2C404F
Closest named color: Charcoal (#264653). oklch(36.1% 0.036 241.4), rgb(44, 64, 79).
Aa
White text reads best on this color (10.75:1).
About this color
#2C404F is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.036 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.019 away. White text reads best on it, at 10.75:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.95:1 |
| White text | 10.75:1 |
Values
| HEX | #2C404F |
| RGB | rgb(44, 64, 79) |
| HSL | hsl(206, 28%, 24%) |
| OKLCH | oklch(36.1% 0.036 241.4) |
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 #2C404F | 10.75:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #2C404F | 1.95:1 | Fails | Lc 9.0 | Not readable |
| #2C404F text on white | 10.75:1 | AAA | Lc 94.9 | Preferred for body text |
| #2C404F text on black | 1.95:1 | Fails | Lc -7.7 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D1DBE2
oklch(88.6% 0.015 238)
-
Step 300
300
#B2C3D1
oklch(80.9% 0.027 242.8)
-
Step 400
400
#89A5BA
oklch(70.8% 0.044 240.7)
-
Step 500
500
#6B8EA9
oklch(63.1% 0.057 241.9)
-
Step 600
600
#537894
oklch(55.6% 0.061 241.8)
-
Step 700
700
#43657E
oklch(49.1% 0.056 241.2)
-
Step 800
800
#375266
oklch(42.6% 0.047 241.3)
-
Step 900
900 (this color)
#2C404F
oklch(36.1% 0.036 241.4)
-
Step 950
950
#1C2831
oklch(27% 0.024 241.1)
#2C404F 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) | #3A4050 | 0.021 |
| Deuteranopia (no green cones) | #353C4F | 0.017 |
| Tritanopia (no blue cones) | #1F4445 | 0.030 |
| Achromatopsia (no color) | #3E3E3E | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C404F
#2C404F
oklch(36.1% 0.036 241.4)
- #4C392A
#4C392A
oklch(36.1% 0.036 59.6)
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 #2C404F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.019
- Dark Grey Blue #29465B ΔE 0.024
- Dark Blue Grey #1F3B4D ΔE 0.025
- Onyx #343A40 ΔE 0.028
- Charcoal Grey #3C4142 ΔE 0.032
- Midnight Green #073B4C ΔE 0.041
- Gunmetal #293241 ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.048
Use #2C404F 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.