#2A2F7D
Closest named color: Marine Blue (#01386A). oklch(35.2% 0.13 274.7), rgb(42, 47, 125).
Aa
White text reads best on this color (11.65:1).
About this color
#2A2F7D is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.130 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.054 away. White text reads best on it, at 11.65:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.80:1 |
| White text | 11.65:1 |
Values
| HEX | #2A2F7D |
| RGB | rgb(42, 47, 125) |
| HSL | hsl(236, 50%, 33%) |
| OKLCH | oklch(35.2% 0.13 274.7) |
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 #2A2F7D | 11.65:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #2A2F7D | 1.80:1 | Fails | Lc 7.5 | Not readable |
| #2A2F7D text on white | 11.65:1 | AAA | Lc 96.4 | Preferred for body text |
| #2A2F7D text on black | 1.80:1 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CED7FE
oklch(88.5% 0.055 275)
-
Step 300
300
#AEBCFF
oklch(80.9% 0.096 274.9)
-
Step 400
400
#8596FF
oklch(70.6% 0.154 274.8)
-
Step 500
500
#6A78FF
oklch(63.2% 0.198 274.8)
-
Step 600
600
#545BEE
oklch(55.5% 0.217 274.7)
-
Step 700
700
#464AD0
oklch(49.2% 0.202 274.8)
-
Step 800
800
#393EA8
oklch(42.8% 0.167 274.8)
-
Step 900
900 (this color)
#2A2F7D
oklch(35.2% 0.13 274.7)
-
Step 950
950
#1C214E
oklch(27.1% 0.082 274.8)
#2A2F7D 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) | #003C80 | 0.043 |
| Deuteranopia (no green cones) | #00357B | 0.038 |
| Tritanopia (no blue cones) | #004251 | 0.108 |
| Achromatopsia (no color) | #383838 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A2F7D
#2A2F7D
oklch(35.2% 0.13 274.7)
- #473A00
#473A00
oklch(35.2% 0.072 94.8)
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 #2A2F7D, closest first.
No curated palette has a color within ΔE 0.04 of #2A2F7D.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.054
- Twilight Blue #0A437A ΔE 0.058
- Midnight Blue #191970 ΔE 0.065
- Marine #042E60 ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.068
- Cobalt #1E488F ΔE 0.070
- Royal #0C1793 ΔE 0.072
- Prussian Blue #1D3557 ΔE 0.073
Use #2A2F7D 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.