#2A4892
Closest named color: Cobalt (#1E488F). oklch(42.1% 0.127 264.8), rgb(42, 72, 146).
Aa
White text reads best on this color (8.60:1).
About this color
#2A4892 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.127 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.013 away. White text reads best on it, at 8.60:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.44:1 |
| White text | 8.60:1 |
Values
| HEX | #2A4892 |
| RGB | rgb(42, 72, 146) |
| HSL | hsl(223, 55%, 37%) |
| OKLCH | oklch(42.1% 0.127 264.8) |
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 #2A4892 | 8.60:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #2A4892 | 2.44:1 | Fails | Lc 14.8 | Not readable |
| #2A4892 text on white | 8.60:1 | AAA | Lc 89.2 | Fine for body text |
| #2A4892 text on black | 2.44:1 | Fails | Lc -13.0 | 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 800.
-
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
#A9C1F2
oklch(81% 0.074 264.4)
-
Step 400
400
#7C9FEB
oklch(70.8% 0.119 264.7)
-
Step 500
500
#5B85E5
oklch(63.2% 0.152 264.6)
-
Step 600
600
#426CD3
oklch(55.6% 0.166 264.8)
-
Step 700
700
#3459B7
oklch(49% 0.155 265)
-
Step 800
800 (this color)
#2A4892
oklch(42.1% 0.127 264.8)
-
Step 900
900
#273E76
oklch(37.7% 0.1 265.2)
-
Step 950
950
#172545
oklch(27% 0.063 264.7)
#2A4892 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) | #1E5195 | 0.025 |
| Deuteranopia (no green cones) | #004790 | 0.028 |
| Tritanopia (no blue cones) | #005966 | 0.102 |
| Achromatopsia (no color) | #4C4C4C | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A4892
#2A4892
oklch(42.1% 0.127 264.8)
- #634900
#634900
oklch(42.2% 0.086 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 #2A4892, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.013
- Dusk Blue #26538D ΔE 0.033
- Light Navy #155084 ΔE 0.038
- Blueberry #464196 ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.047
- Twilight Blue #0A437A ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.058
Use #2A4892 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.