#1F264E
Closest named color: Oxford Blue (#1B263B). oklch(28.5% 0.073 273.4), rgb(31, 38, 78).
Aa
White text reads best on this color (14.52:1).
About this color
#1F264E is a dark, moderately saturated blue. In OKLCH its lightness is 29%, its chroma 0.073 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.036 away. White text reads best on it, at 14.52:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.44:1 |
| White text | 14.52:1 |
Values
| HEX | #1F264E |
| RGB | rgb(31, 38, 78) |
| HSL | hsl(231, 43%, 21%) |
| OKLCH | oklch(28.5% 0.073 273.4) |
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 #1F264E | 14.52:1 | AAA | Lc -104.1 | Preferred for body text |
| Black text on #1F264E | 1.44:1 | Fails | Lc 0.0 | Not readable |
| #1F264E text on white | 14.52:1 | AAA | Lc 101.2 | Preferred for body text |
| #1F264E text on black | 1.44:1 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#AEBDF9
oklch(80.8% 0.087 273.5)
-
Step 400
400
#8599F7
oklch(70.8% 0.139 273.3)
-
Step 500
500
#697CF3
oklch(63.1% 0.178 273.4)
-
Step 600
600
#5362E2
oklch(55.7% 0.193 273.3)
-
Step 700
700
#4450C4
oklch(49.1% 0.179 273.3)
-
Step 800
800
#38429F
oklch(42.7% 0.15 273.6)
-
Step 900
900
#2F397E
oklch(37.7% 0.116 273.3)
-
Step 950
950 (this color)
#1F264E
oklch(28.5% 0.073 273.4)
#1F264E 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) | #142B4F | 0.019 |
| Deuteranopia (no green cones) | #0E274D | 0.021 |
| Tritanopia (no blue cones) | #072F36 | 0.065 |
| Achromatopsia (no color) | #292929 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F264E
#1F264E
oklch(28.5% 0.073 273.4)
- #342900
#342900
oklch(28.5% 0.058 93.2)
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 #1F264E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.036
- Space Cadet #2B2D42 ΔE 0.041
- Marine #042E60 ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.047
- Gunmetal #293241 ΔE 0.054
- Dark #1B2431 ΔE 0.055
- Marine Blue #01386A ΔE 0.069
- Jet #212529 ΔE 0.069
Use #1F264E 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.