#1F2049
Closest named color: Oxford Blue (#1B263B). oklch(26.7% 0.075 279), rgb(31, 32, 73).
Aa
White text reads best on this color (15.42:1).
About this color
#1F2049 is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.075 and its hue 279°. 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 15.42:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.36:1 |
| White text | 15.42:1 |
Values
| HEX | #1F2049 |
| RGB | rgb(31, 32, 73) |
| HSL | hsl(239, 40%, 20%) |
| OKLCH | oklch(26.7% 0.075 279) |
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 #1F2049 | 15.42:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #1F2049 | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #1F2049 text on white | 15.42:1 | AAA | Lc 102.2 | Preferred for body text |
| #1F2049 text on black | 1.36:1 | 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
#E6E9FB
oklch(93.7% 0.024 278.4)
-
Step 200
200
#D2D6FA
oklch(88.4% 0.05 280.3)
-
Step 300
300
#B4BBF9
oklch(80.9% 0.088 279.2)
-
Step 400
400
#8F95F7
oklch(70.7% 0.142 279.4)
-
Step 500
500
#7578F3
oklch(63.1% 0.18 278.8)
-
Step 600
600
#605DE2
oklch(55.6% 0.196 278.9)
-
Step 700
700
#504BC4
oklch(49% 0.183 279.1)
-
Step 800
800
#413F9F
oklch(42.8% 0.151 278.8)
-
Step 900
900
#36377E
oklch(37.8% 0.117 278.6)
-
Step 950
950 (this color)
#1F2049
oklch(26.7% 0.075 279)
#1F2049 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) | #0C264A | 0.028 |
| Deuteranopia (no green cones) | #072348 | 0.030 |
| Tritanopia (no blue cones) | #0D2931 | 0.064 |
| Achromatopsia (no color) | #242424 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F2049
#1F2049
oklch(26.7% 0.075 279)
- #2D2600
#2D2600
oklch(26.8% 0.056 98.7)
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 #1F2049, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.036
- Dark #1B2431 ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.052
- Dark Indigo #1F0954 ΔE 0.056
- Marine #042E60 ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.066
- Jet #212529 ΔE 0.067
- Gunmetal #293241 ΔE 0.067
Use #1F2049 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.