#1F2452
Closest named color: Marine (#042E60). oklch(28.4% 0.083 275.1), rgb(31, 36, 82).
Aa
White text reads best on this color (14.66:1).
About this color
#1F2452 is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.083 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.041 away. White text reads best on it, at 14.66:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.43:1 |
| White text | 14.66:1 |
Values
| HEX | #1F2452 |
| RGB | rgb(31, 36, 82) |
| HSL | hsl(234, 45%, 22%) |
| OKLCH | oklch(28.4% 0.083 275.1) |
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 #1F2452 | 14.66:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #1F2452 | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #1F2452 text on white | 14.66:1 | AAA | Lc 101.3 | Preferred for body text |
| #1F2452 text on black | 1.43:1 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CED7FE
oklch(88.5% 0.055 275)
-
Step 300
300
#AEBCFF
oklch(80.9% 0.096 274.9)
-
Step 400
400
#8696FF
oklch(70.7% 0.154 275.2)
-
Step 500
500
#6B77FF
oklch(63.1% 0.199 275.3)
-
Step 600
600
#555BEF
oklch(55.6% 0.218 275)
-
Step 700
700
#4649D0
oklch(49% 0.203 275)
-
Step 800
800
#393DA8
oklch(42.6% 0.168 275)
-
Step 900
900
#303685
oklch(37.7% 0.131 274.9)
-
Step 950
950 (this color)
#1F2452
oklch(28.4% 0.083 275.1)
#1F2452 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) | #0B2B54 | 0.028 |
| Deuteranopia (no green cones) | #032651 | 0.031 |
| Tritanopia (no blue cones) | #032E37 | 0.072 |
| Achromatopsia (no color) | #282828 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F2452
#1F2452
oklch(28.4% 0.083 275.1)
- #332900
#332900
oklch(28.4% 0.058 94.7)
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 #1F2452, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.052
- Midnight Blue #191970 ΔE 0.061
- Dark Indigo #1F0954 ΔE 0.062
- Dark #1B2431 ΔE 0.063
- Gunmetal #293241 ΔE 0.063
Use #1F2452 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.