#2C3E6D
Closest named color: Twilight Blue (#0A437A). oklch(37.3% 0.084 266.6), rgb(44, 62, 109).
Aa
White text reads best on this color (10.41:1).
About this color
#2C3E6D is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.084 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.034 away. White text reads best on it, at 10.41:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.01:1 |
| White text | 10.41:1 |
Values
| HEX | #2C3E6D |
| RGB | rgb(44, 62, 109) |
| HSL | hsl(223, 42%, 30%) |
| OKLCH | oklch(37.3% 0.084 266.6) |
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 #2C3E6D | 10.41:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #2C3E6D | 2.01:1 | Fails | Lc 9.9 | Not readable |
| #2C3E6D text on white | 10.41:1 | AAA | Lc 94.0 | Preferred for body text |
| #2C3E6D text on black | 2.01:1 | Fails | Lc -8.5 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F1
oklch(88.4% 0.035 266)
-
Step 300
300
#AEC0EA
oklch(80.8% 0.063 266.8)
-
Step 400
400
#849FE0
oklch(70.8% 0.1 266.6)
-
Step 500
500
#6586D7
oklch(63.1% 0.128 266.1)
-
Step 600
600
#4D6EC5
oklch(55.7% 0.14 266.3)
-
Step 700
700
#3E5BAA
oklch(49% 0.131 266.5)
-
Step 800
800
#344B8A
oklch(42.8% 0.108 266.8)
-
Step 900
900 (this color)
#2C3E6D
oklch(37.3% 0.084 266.6)
-
Step 950
950
#1A2540
oklch(26.9% 0.053 266.2)
#2C3E6D 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) | #2A436F | 0.015 |
| Deuteranopia (no green cones) | #223D6C | 0.013 |
| Tritanopia (no blue cones) | #024850 | 0.075 |
| Achromatopsia (no color) | #404040 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C3E6D
#2C3E6D
oklch(37.3% 0.084 266.6)
- #523D00
#523D00
oklch(37.3% 0.076 86.6)
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 #2C3E6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.034
- Marine Blue #01386A ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.050
- Charcoal #264653 ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.059
- Light Navy #155084 ΔE 0.060
- Cobalt #1E488F ΔE 0.060
Use #2C3E6D 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.