#2A448E
Closest named color: Cobalt (#1E488F). oklch(41% 0.127 266.3), rgb(42, 68, 142).
Aa
White text reads best on this color (9.06:1).
About this color
#2A448E is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.127 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.014 away. White text reads best on it, at 9.06:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.31:1 |
| White text | 9.06:1 |
Values
| HEX | #2A448E |
| RGB | rgb(42, 68, 142) |
| HSL | hsl(224, 54%, 36%) |
| OKLCH | oklch(41% 0.127 266.3) |
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 #2A448E | 9.06:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #2A448E | 2.31:1 | Fails | Lc 13.5 | Not readable |
| #2A448E text on white | 9.06:1 | AAA | Lc 90.5 | Preferred for body text |
| #2A448E text on black | 2.31:1 | Fails | Lc -11.8 | 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
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#AAC0F1
oklch(80.8% 0.074 265.9)
-
Step 400
400
#7E9EEB
oklch(70.7% 0.119 266.2)
-
Step 500
500
#5F84E4
oklch(63.1% 0.15 266.3)
-
Step 600
600
#466BD2
oklch(55.5% 0.164 266.3)
-
Step 700
700
#3859B6
oklch(49.1% 0.152 266.2)
-
Step 800
800 (this color)
#2A448E
oklch(41% 0.127 266.3)
-
Step 900
900
#293E76
oklch(37.8% 0.099 266.3)
-
Step 950
950
#182545
oklch(27.1% 0.062 265.8)
#2A448E 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) | #184D91 | 0.026 |
| Deuteranopia (no green cones) | #00448C | 0.029 |
| Tritanopia (no blue cones) | #005562 | 0.102 |
| Achromatopsia (no color) | #494949 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A448E
#2A448E
oklch(41% 0.127 266.3)
- #5E4600
#5E4600
oklch(40.9% 0.084 86.2)
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 #2A448E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.014
- Blueberry #464196 ΔE 0.041
- Light Navy #155084 ΔE 0.042
- Dusk Blue #26538D ΔE 0.043
- Dark Slate Blue #483D8B ΔE 0.043
- Twilight Blue #0A437A ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.056
- Sapphire #2138AB ΔE 0.058
Use #2A448E 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.