#2D3883
Closest named color: Twilight Blue (#0A437A). oklch(37.7% 0.126 272.6), rgb(45, 56, 131).
Aa
White text reads best on this color (10.47:1).
About this color
#2D3883 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.126 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.044 away. White text reads best on it, at 10.47:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.00:1 |
| White text | 10.47:1 |
Values
| HEX | #2D3883 |
| RGB | rgb(45, 56, 131) |
| HSL | hsl(232, 49%, 35%) |
| OKLCH | oklch(37.7% 0.126 272.6) |
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 #2D3883 | 10.47:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #2D3883 | 2.00:1 | Fails | Lc 10.0 | Not readable |
| #2D3883 text on white | 10.47:1 | AAA | Lc 94.0 | Preferred for body text |
| #2D3883 text on black | 2.00:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CDD8FD
oklch(88.6% 0.052 272.2)
-
Step 300
300
#ACBDFE
oklch(80.9% 0.094 272.8)
-
Step 400
400
#8198FE
oklch(70.7% 0.151 272.4)
-
Step 500
500
#657AFC
oklch(63.1% 0.193 272.7)
-
Step 600
600
#4F5FEB
oklch(55.6% 0.209 272.6)
-
Step 700
700
#414DCC
oklch(49.1% 0.194 272.8)
-
Step 800
800
#3540A5
oklch(42.6% 0.161 272.8)
-
Step 900
900 (this color)
#2D3883
oklch(37.7% 0.126 272.6)
-
Step 950
950
#1A224D
oklch(27.1% 0.079 272.1)
#2D3883 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) | #004386 | 0.041 |
| Deuteranopia (no green cones) | #003C81 | 0.037 |
| Tritanopia (no blue cones) | #004A57 | 0.107 |
| Achromatopsia (no color) | #3F3F3F | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D3883
#2D3883
oklch(37.7% 0.126 272.6)
- #504000
#504000
oklch(37.8% 0.077 92.8)
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 #2D3883, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.044
- Cobalt #1E488F ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.047
- Blueberry #464196 ΔE 0.056
- Marine Blue #01386A ΔE 0.060
- Sapphire #2138AB ΔE 0.067
- Light Navy #155084 ΔE 0.068
- Dusk Blue #26538D ΔE 0.075
Use #2D3883 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.