#1F2350
Closest named color: Oxford Blue (#1B263B). oklch(28% 0.081 276), rgb(31, 35, 80).
Aa
White text reads best on this color (14.84:1).
About this color
#1F2350 is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.081 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.043 away. White text reads best on it, at 14.84:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.41:1 |
| White text | 14.84:1 |
Values
| HEX | #1F2350 |
| RGB | rgb(31, 35, 80) |
| HSL | hsl(235, 44%, 22%) |
| OKLCH | oklch(28% 0.081 276) |
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 #1F2350 | 14.84:1 | AAA | Lc -104.4 | Preferred for body text |
| Black text on #1F2350 | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #1F2350 text on white | 14.84:1 | AAA | Lc 101.5 | Preferred for body text |
| #1F2350 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
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CFD7FD
oklch(88.5% 0.053 275.9)
-
Step 300
300
#AFBCFF
oklch(80.9% 0.096 275.6)
-
Step 400
400
#8896FF
oklch(70.8% 0.153 276)
-
Step 500
500
#6D77FD
oklch(63.1% 0.196 276)
-
Step 600
600
#585BED
oklch(55.6% 0.215 276)
-
Step 700
700
#4949CE
oklch(49.1% 0.2 276.1)
-
Step 800
800
#3B3DA6
oklch(42.6% 0.165 276)
-
Step 900
900
#323684
oklch(37.7% 0.129 276.1)
-
Step 950
950 (this color)
#1F2350
oklch(28% 0.081 276)
#1F2350 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) | #0B2A52 | 0.029 |
| Deuteranopia (no green cones) | #04264F | 0.030 |
| Tritanopia (no blue cones) | #052D35 | 0.072 |
| Achromatopsia (no color) | #272727 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F2350
#1F2350
oklch(28% 0.081 276)
- #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 #1F2350, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.043
- Marine #042E60 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.055
- Dark #1B2431 ΔE 0.060
- Dark Indigo #1F0954 ΔE 0.060
- Midnight Blue #191970 ΔE 0.063
- Gunmetal #293241 ΔE 0.064
Use #1F2350 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.