#1F293B
Closest named color: Oxford Blue (#1B263B). oklch(28% 0.036 261.8), rgb(31, 41, 59).
Aa
White text reads best on this color (14.59:1).
About this color
#1F293B is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.036 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.013 away. White text reads best on it, at 14.59:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.43:1 |
| White text | 14.59:1 |
Values
| HEX | #1F293B |
| RGB | rgb(31, 41, 59) |
| HSL | hsl(219, 31%, 18%) |
| OKLCH | oklch(28% 0.036 261.8) |
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 #1F293B | 14.59:1 | AAA | Lc -104.3 | Preferred for body text |
| Black text on #1F293B | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #1F293B text on white | 14.59:1 | AAA | Lc 101.4 | Preferred for body text |
| #1F293B text on black | 1.43:1 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D1DAE9
oklch(88.6% 0.023 260.7)
-
Step 300
300
#B2C1DD
oklch(80.9% 0.043 263)
-
Step 400
400
#89A1CC
oklch(70.6% 0.069 261.9)
-
Step 500
500
#6C8ABF
oklch(63.2% 0.087 261.4)
-
Step 600
600
#5473AB
oklch(55.6% 0.095 261.7)
-
Step 700
700
#446093
oklch(49.1% 0.089 261.7)
-
Step 800
800
#384F77
oklch(42.8% 0.073 261)
-
Step 900
900
#314160
oklch(37.6% 0.057 263)
-
Step 950
950 (this color)
#1F293B
oklch(28% 0.036 261.8)
#1F293B 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) | #232A3C | 0.008 |
| Deuteranopia (no green cones) | #20283B | 0.004 |
| Tritanopia (no blue cones) | #152D2F | 0.033 |
| Achromatopsia (no color) | #292929 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F293B
#1F293B
oklch(28% 0.036 261.8)
- #322713
#322713
oklch(28% 0.036 81.3)
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 #1F293B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.013
- Dark #1B2431 ΔE 0.024
- Space Cadet #2B2D42 ΔE 0.027
- Jet #212529 ΔE 0.033
- Gunmetal #293241 ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.057
- Midnight Green #073B4C ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.062
Use #1F293B 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.