#1A2857
Closest named color: Marine (#042E60). oklch(29.4% 0.087 268.2), rgb(26, 40, 87).
Aa
White text reads best on this color (14.14:1).
About this color
#1A2857 is a dark, moderately saturated blue. In OKLCH its lightness is 29%, its chroma 0.087 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.027 away. White text reads best on it, at 14.14:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.48:1 |
| White text | 14.14:1 |
Values
| HEX | #1A2857 |
| RGB | rgb(26, 40, 87) |
| HSL | hsl(226, 54%, 22%) |
| OKLCH | oklch(29.4% 0.087 268.2) |
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 #1A2857 | 14.14:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #1A2857 | 1.48:1 | Fails | Lc 0.0 | Not readable |
| #1A2857 text on white | 14.14:1 | AAA | Lc 100.6 | Preferred for body text |
| #1A2857 text on black | 1.48:1 | 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 950.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A6BFFF
oklch(80.9% 0.095 267.8)
-
Step 400
400
#789AFF
oklch(70.6% 0.153 268.3)
-
Step 500
500
#587DFF
oklch(63.1% 0.197 268.3)
-
Step 600
600
#3D5FF6
oklch(55.6% 0.228 268.1)
-
Step 700
700
#314DD7
oklch(49.2% 0.213 268.2)
-
Step 800
800
#2840AD
oklch(42.7% 0.176 268.2)
-
Step 900
900
#243889
oklch(37.7% 0.137 268.4)
-
Step 950
950 (this color)
#1A2857
oklch(29.4% 0.087 268.2)
#1A2857 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) | #0E2E59 | 0.020 |
| Deuteranopia (no green cones) | #012856 | 0.024 |
| Tritanopia (no blue cones) | #00333B | 0.073 |
| Achromatopsia (no color) | #2B2B2B | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A2857
#1A2857
oklch(29.4% 0.087 268.2)
- #392A00
#392A00
oklch(29.4% 0.06 87.6)
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 #1A2857, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.027
- Prussian Blue #1D3557 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.051
- Marine Blue #01386A ΔE 0.055
- Midnight Blue #191970 ΔE 0.058
- Gunmetal #293241 ΔE 0.061
- Midnight Green #073B4C ΔE 0.069
Use #1A2857 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.