#2A317A
Closest named color: Marine Blue (#01386A). oklch(35.3% 0.123 274.1), rgb(42, 49, 122).
Aa
White text reads best on this color (11.54:1).
About this color
#2A317A is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.123 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.049 away. White text reads best on it, at 11.54:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.81:1 |
| White text | 11.54:1 |
Values
| HEX | #2A317A |
| RGB | rgb(42, 49, 122) |
| HSL | hsl(235, 49%, 32%) |
| OKLCH | oklch(35.3% 0.123 274.1) |
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 #2A317A | 11.54:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #2A317A | 1.81:1 | Fails | Lc 7.7 | Not readable |
| #2A317A text on white | 11.54:1 | AAA | Lc 96.2 | Preferred for body text |
| #2A317A text on black | 1.81:1 | Fails | Lc 0.0 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED7FC
oklch(88.4% 0.052 274.5)
-
Step 300
300
#AEBDFD
oklch(81% 0.092 274)
-
Step 400
400
#8597FC
oklch(70.6% 0.149 274.3)
-
Step 500
500
#697AF9
oklch(63.1% 0.188 274)
-
Step 600
600
#545FE8
oklch(55.7% 0.204 274.2)
-
Step 700
700
#454DCA
oklch(49.1% 0.191 274.2)
-
Step 800
800
#3840A3
oklch(42.7% 0.158 274.1)
-
Step 900
900 (this color)
#2A317A
oklch(35.3% 0.123 274.1)
-
Step 950
950
#1C214C
oklch(27% 0.079 274.8)
#2A317A 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) | #003D7C | 0.042 |
| Deuteranopia (no green cones) | #003679 | 0.037 |
| Tritanopia (no blue cones) | #004350 | 0.104 |
| Achromatopsia (no color) | #393939 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A317A
#2A317A
oklch(35.3% 0.123 274.1)
- #483A00
#483A00
oklch(35.3% 0.072 93.7)
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 #2A317A, closest first.
No curated palette has a color within ΔE 0.04 of #2A317A.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.049
- Twilight Blue #0A437A ΔE 0.053
- Marine #042E60 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.066
- Prussian Blue #1D3557 ΔE 0.066
- Cobalt #1E488F ΔE 0.068
- Midnight Blue #191970 ΔE 0.068
- Blueberry #464196 ΔE 0.078
Use #2A317A 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.