#2D4372
Closest named color: Twilight Blue (#0A437A). oklch(38.9% 0.085 263.9), rgb(45, 67, 114).
Aa
White text reads best on this color (9.73:1).
About this color
#2D4372 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.085 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.031 away. White text reads best on it, at 9.73:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.15:1 |
| White text | 9.73:1 |
Values
| HEX | #2D4372 |
| RGB | rgb(45, 67, 114) |
| HSL | hsl(221, 43%, 31%) |
| OKLCH | oklch(38.9% 0.085 263.9) |
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 #2D4372 | 9.73:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #2D4372 | 2.15:1 | Fails | Lc 11.5 | Not readable |
| #2D4372 text on white | 9.73:1 | AAA | Lc 92.4 | Preferred for body text |
| #2D4372 text on black | 2.15:1 | Fails | Lc -10.0 | 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
#F2F5FB
oklch(97% 0.009 264.5)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#ACC1EB
oklch(80.9% 0.064 264.1)
-
Step 400
400
#80A0E1
oklch(70.8% 0.102 263.9)
-
Step 500
500
#6087D8
oklch(63.1% 0.13 263.6)
-
Step 600
600
#486FC5
oklch(55.6% 0.141 264)
-
Step 700
700
#395CAA
oklch(49% 0.131 264)
-
Step 800
800
#2F4C8A
oklch(42.7% 0.109 263.6)
-
Step 900
900 (this color)
#2D4372
oklch(38.9% 0.085 263.9)
-
Step 950
950
#192641
oklch(27.2% 0.054 263.7)
#2D4372 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) | #2F4774 | 0.013 |
| Deuteranopia (no green cones) | #264171 | 0.011 |
| Tritanopia (no blue cones) | #004D55 | 0.074 |
| Achromatopsia (no color) | #444444 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4372
#2D4372
oklch(38.9% 0.085 263.9)
- #594000
#594000
oklch(38.9% 0.08 83.4)
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 #2D4372, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.044
- Light Navy #155084 ΔE 0.045
- Cobalt #1E488F ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.055
- Marine Blue #01386A ΔE 0.056
- Charcoal #264653 ΔE 0.059
- Dusk Blue #26538D ΔE 0.059
Use #2D4372 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.