#2D357A
Closest named color: Twilight Blue (#0A437A). oklch(36.4% 0.117 274.1), rgb(45, 53, 122).
Aa
White text reads best on this color (11.04:1).
About this color
#2D357A is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.117 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.046 away. White text reads best on it, at 11.04:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.90:1 |
| White text | 11.04:1 |
Values
| HEX | #2D357A |
| RGB | rgb(45, 53, 122) |
| HSL | hsl(234, 46%, 33%) |
| OKLCH | oklch(36.4% 0.117 274.1) |
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 #2D357A | 11.04:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #2D357A | 1.90:1 | Fails | Lc 8.7 | Not readable |
| #2D357A text on white | 11.04:1 | AAA | Lc 95.2 | Preferred for body text |
| #2D357A text on black | 1.90:1 | Fails | Lc -7.4 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CFD8FA
oklch(88.6% 0.048 273.7)
-
Step 300
300
#AFBDFA
oklch(80.9% 0.088 274.3)
-
Step 400
400
#8698F7
oklch(70.6% 0.14 274.1)
-
Step 500
500
#6B7BF3
oklch(63% 0.179 274.4)
-
Step 600
600
#5561E2
oklch(55.6% 0.194 274.2)
-
Step 700
700
#464FC4
oklch(49.1% 0.18 274.3)
-
Step 800
800
#39429F
oklch(42.8% 0.149 274.1)
-
Step 900
900 (this color)
#2D357A
oklch(36.4% 0.117 274.1)
-
Step 950
950
#1C224A
oklch(27% 0.074 274)
#2D357A 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) | #053F7C | 0.040 |
| Deuteranopia (no green cones) | #003979 | 0.039 |
| Tritanopia (no blue cones) | #004552 | 0.100 |
| Achromatopsia (no color) | #3C3C3C | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D357A
#2D357A
oklch(36.4% 0.117 274.1)
- #4B3D00
#4B3D00
oklch(36.4% 0.075 94.3)
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 #2D357A, closest first.
No curated palette has a color within ΔE 0.04 of #2D357A.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.046
- Marine Blue #01386A ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.057
- Cobalt #1E488F ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.066
- Marine #042E60 ΔE 0.068
- Blueberry #464196 ΔE 0.069
- Light Navy #155084 ΔE 0.076
Use #2D357A 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.