#1F263E
Closest named color: Oxford Blue (#1B263B). oklch(27.4% 0.046 270.8), rgb(31, 38, 62).
Aa
White text reads best on this color (14.94:1).
About this color
#1F263E is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.046 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.009 away. White text reads best on it, at 14.94:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.40:1 |
| White text | 14.94:1 |
Values
| HEX | #1F263E |
| RGB | rgb(31, 38, 62) |
| HSL | hsl(226, 33%, 18%) |
| OKLCH | oklch(27.4% 0.046 270.8) |
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 #1F263E | 14.94:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #1F263E | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #1F263E text on white | 14.94:1 | AAA | Lc 101.8 | Preferred for body text |
| #1F263E 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF5
oklch(93.7% 0.015 270)
-
Step 200
200
#D1D9EE
oklch(88.6% 0.03 269.1)
-
Step 300
300
#B3BFE5
oklch(80.8% 0.055 271.4)
-
Step 400
400
#8C9ED7
oklch(70.7% 0.086 270.6)
-
Step 500
500
#7085CD
oklch(63.1% 0.111 270.6)
-
Step 600
600
#596EBA
oklch(55.7% 0.121 270.5)
-
Step 700
700
#495BA0
oklch(49% 0.113 270.8)
-
Step 800
800
#3C4B82
oklch(42.8% 0.093 270.6)
-
Step 900
900
#333F68
oklch(37.7% 0.072 270.3)
-
Step 950
950 (this color)
#1F263E
oklch(27.4% 0.046 270.8)
#1F263E 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) | #1D283F | 0.007 |
| Deuteranopia (no green cones) | #1B263D | 0.007 |
| Tritanopia (no blue cones) | #142B2F | 0.041 |
| Achromatopsia (no color) | #272727 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F263E
#1F263E
oklch(27.4% 0.046 270.8)
- #302609
#302609
oklch(27.3% 0.046 89.8)
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 #1F263E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.009
- Dark #1B2431 ΔE 0.026
- Space Cadet #2B2D42 ΔE 0.032
- Jet #212529 ΔE 0.039
- Gunmetal #293241 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.059
- Marine #042E60 ΔE 0.065
Use #1F263E 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.