#2A396B
Closest named color: Marine Blue (#01386A). oklch(35.9% 0.089 269), rgb(42, 57, 107).
Aa
White text reads best on this color (11.07:1).
About this color
#2A396B is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.089 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.036 away. White text reads best on it, at 11.07:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.89:1 |
| White text | 11.07:1 |
Values
| HEX | #2A396B |
| RGB | rgb(42, 57, 107) |
| HSL | hsl(226, 44%, 29%) |
| OKLCH | oklch(35.9% 0.089 269) |
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 #2A396B | 11.07:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #2A396B | 1.89:1 | Fails | Lc 8.5 | Not readable |
| #2A396B text on white | 11.07:1 | AAA | Lc 95.4 | Preferred for body text |
| #2A396B text on black | 1.89:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CFD9F2
oklch(88.5% 0.036 268.3)
-
Step 300
300
#AFC0ED
oklch(81% 0.067 268.7)
-
Step 400
400
#859EE3
oklch(70.8% 0.105 268.4)
-
Step 500
500
#6884DB
oklch(63.1% 0.135 268.9)
-
Step 600
600
#506CC9
oklch(55.7% 0.147 268.7)
-
Step 700
700
#4159AE
oklch(49% 0.138 269)
-
Step 800
800
#36498D
oklch(42.7% 0.115 269.3)
-
Step 900
900 (this color)
#2A396B
oklch(35.9% 0.089 269)
-
Step 950
950
#1B2542
oklch(27.1% 0.056 268.2)
#2A396B 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) | #233F6D | 0.018 |
| Deuteranopia (no green cones) | #1A396A | 0.019 |
| Tritanopia (no blue cones) | #00444C | 0.080 |
| Achromatopsia (no color) | #3C3C3C | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A396B
#2A396B
oklch(35.9% 0.089 269)
- #4C3A00
#4C3A00
oklch(35.8% 0.073 89.1)
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 #2A396B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.036
- Twilight Blue #0A437A ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.055
- Marine #042E60 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.058
- Charcoal #264653 ΔE 0.066
- Midnight Green #073B4C ΔE 0.068
Use #2A396B 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.