#2A4077
Closest named color: Twilight Blue (#0A437A). oklch(38.4% 0.098 265.6), rgb(42, 64, 119).
Aa
White text reads best on this color (10.00:1).
About this color
#2A4077 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.098 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.026 away. White text reads best on it, at 10.00:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.09:1 |
| White text | 10.00:1 |
Values
| HEX | #2A4077 |
| RGB | rgb(42, 64, 119) |
| HSL | hsl(223, 48%, 32%) |
| OKLCH | oklch(38.4% 0.098 265.6) |
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 #2A4077 | 10.00:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #2A4077 | 2.09:1 | Fails | Lc 10.9 | Not readable |
| #2A4077 text on white | 10.00:1 | AAA | Lc 93.0 | Preferred for body text |
| #2A4077 text on black | 2.09:1 | Fails | Lc -9.5 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CCD9F5
oklch(88.4% 0.041 265.7)
-
Step 300
300
#AAC0F1
oklch(80.8% 0.074 265.9)
-
Step 400
400
#7E9EEA
oklch(70.7% 0.118 266.1)
-
Step 500
500
#5E84E3
oklch(63% 0.149 265.9)
-
Step 600
600
#456CD1
oklch(55.6% 0.162 265.5)
-
Step 700
700
#3759B5
oklch(49% 0.151 265.8)
-
Step 800
800
#2D4993
oklch(42.6% 0.126 265.7)
-
Step 900
900 (this color)
#2A4077
oklch(38.4% 0.098 265.6)
-
Step 950
950
#182544
oklch(27% 0.061 265.4)
#2A4077 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) | #264679 | 0.017 |
| Deuteranopia (no green cones) | #1A3F76 | 0.018 |
| Tritanopia (no blue cones) | #004C55 | 0.083 |
| Achromatopsia (no color) | #424242 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A4077
#2A4077
oklch(38.4% 0.098 265.6)
- #563F00
#563F00
oklch(38.3% 0.078 85.1)
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 #2A4077, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.026
- Cobalt #1E488F ΔE 0.043
- Light Navy #155084 ΔE 0.048
- Marine Blue #01386A ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.057
- Deep Sea Blue #015482 ΔE 0.060
- Dusk Blue #26538D ΔE 0.061
Use #2A4077 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.