#1F244A
Closest named color: Oxford Blue (#1B263B). oklch(27.8% 0.07 275.3), rgb(31, 36, 74).
Aa
White text reads best on this color (14.89:1).
About this color
#1F244A is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.070 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.031 away. White text reads best on it, at 14.89:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.40:1 |
| White text | 14.89:1 |
Values
| HEX | #1F244A |
| RGB | rgb(31, 36, 74) |
| HSL | hsl(233, 41%, 21%) |
| OKLCH | oklch(27.8% 0.07 275.3) |
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 #1F244A | 14.89:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #1F244A | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #1F244A text on white | 14.89:1 | AAA | Lc 101.6 | Preferred for body text |
| #1F244A text on black | 1.40:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D7F8
oklch(88.4% 0.046 276)
-
Step 300
300
#B1BDF6
oklch(80.9% 0.082 275.2)
-
Step 400
400
#8998F2
oklch(70.6% 0.133 275.3)
-
Step 500
500
#6E7CEE
oklch(63.1% 0.17 275.2)
-
Step 600
600
#5862DC
oklch(55.5% 0.184 275.1)
-
Step 700
700
#4950BF
oklch(49% 0.171 275.4)
-
Step 800
800
#3C439A
oklch(42.8% 0.14 275.3)
-
Step 900
900
#32397B
oklch(37.6% 0.111 275.2)
-
Step 950
950 (this color)
#1F244A
oklch(27.8% 0.07 275.3)
#1F244A 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) | #13294B | 0.020 |
| Deuteranopia (no green cones) | #0F2649 | 0.021 |
| Tritanopia (no blue cones) | #0C2C33 | 0.061 |
| Achromatopsia (no color) | #272727 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F244A
#1F244A
oklch(27.8% 0.07 275.3)
- #312800
#312800
oklch(27.9% 0.057 96)
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 #1F244A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.042
- Dark #1B2431 ΔE 0.048
- Marine #042E60 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.055
- Gunmetal #293241 ΔE 0.056
- Jet #212529 ΔE 0.063
- Dark Indigo #1F0954 ΔE 0.067
Use #1F244A 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.