#2C4369
Closest named color: Dark Grey Blue (#29465B). oklch(38.3% 0.071 260), rgb(44, 67, 105).
Aa
White text reads best on this color (9.93:1).
About this color
#2C4369 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.071 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.029 away. White text reads best on it, at 9.93:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.11:1 |
| White text | 9.93:1 |
Values
| HEX | #2C4369 |
| RGB | rgb(44, 67, 105) |
| HSL | hsl(217, 41%, 29%) |
| OKLCH | oklch(38.3% 0.071 260) |
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 #2C4369 | 9.93:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #2C4369 | 2.11:1 | Fails | Lc 11.0 | Not readable |
| #2C4369 text on white | 9.93:1 | AAA | Lc 92.9 | Preferred for body text |
| #2C4369 text on black | 2.11:1 | Fails | Lc -9.5 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAED
oklch(88.5% 0.029 259.6)
-
Step 300
300
#ADC2E4
oklch(81% 0.053 260)
-
Step 400
400
#81A2D6
oklch(70.7% 0.085 259.3)
-
Step 500
500
#628ACB
oklch(63.2% 0.108 259.8)
-
Step 600
600
#4872B8
oklch(55.5% 0.119 260.1)
-
Step 700
700
#3A609F
oklch(49.2% 0.11 260)
-
Step 800
800
#304E81
oklch(42.6% 0.092 260.4)
-
Step 900
900 (this color)
#2C4369
oklch(38.3% 0.071 260)
-
Step 950
950
#19263C
oklch(26.8% 0.045 260.5)
#2C4369 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) | #34466B | 0.015 |
| Deuteranopia (no green cones) | #2C4068 | 0.009 |
| Tritanopia (no blue cones) | #074B51 | 0.063 |
| Achromatopsia (no color) | #434343 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C4369
#2C4369
oklch(38.3% 0.071 260)
- #573E0D
#573E0D
oklch(38.2% 0.071 79.6)
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 #2C4369, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.029
- Twilight Blue #0A437A ΔE 0.039
- Charcoal #264653 ΔE 0.043
- Light Navy #155084 ΔE 0.054
- Marine Blue #01386A ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.060
Use #2C4369 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.