#1F244D
Closest named color: Oxford Blue (#1B263B). oklch(28% 0.075 275.2), rgb(31, 36, 77).
Aa
White text reads best on this color (14.81:1).
About this color
#1F244D is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.075 and its hue 275°. 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 14.81:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.41:1 |
| White text | 14.81:1 |
Values
| HEX | #1F244D |
| RGB | rgb(31, 36, 77) |
| HSL | hsl(233, 43%, 21%) |
| OKLCH | oklch(28% 0.075 275.2) |
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 #1F244D | 14.81:1 | AAA | Lc -104.4 | Preferred for body text |
| Black text on #1F244D | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #1F244D text on white | 14.81:1 | AAA | Lc 101.5 | Preferred for body text |
| #1F244D text on black | 1.41:1 | 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
#E5E9FC
oklch(93.7% 0.026 276.4)
-
Step 200
200
#CFD7FA
oklch(88.4% 0.049 275.2)
-
Step 300
300
#B0BCFA
oklch(80.8% 0.089 275.8)
-
Step 400
400
#8897F8
oklch(70.6% 0.142 275.5)
-
Step 500
500
#6D7AF5
oklch(63.1% 0.182 275.4)
-
Step 600
600
#5760E3
oklch(55.6% 0.196 275.1)
-
Step 700
700
#484EC6
oklch(49.2% 0.183 275.2)
-
Step 800
800
#3B41A0
oklch(42.8% 0.151 275.2)
-
Step 900
900
#32387F
oklch(37.7% 0.118 275.5)
-
Step 950
950 (this color)
#1F244D
oklch(28% 0.075 275.2)
#1F244D 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) | #112A4E | 0.024 |
| Deuteranopia (no green cones) | #0B264C | 0.025 |
| Tritanopia (no blue cones) | #092D34 | 0.066 |
| Achromatopsia (no color) | #282828 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F244D
#1F244D
oklch(28% 0.075 275.2)
- #322800
#322800
oklch(28% 0.057 94.5)
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 #1F244D, 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 0.045
- Marine #042E60 ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.053
- Dark #1B2431 ΔE 0.054
- Gunmetal #293241 ΔE 0.059
- Dark Indigo #1F0954 ΔE 0.065
- Jet #212529 ΔE 0.069
Use #1F244D 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.