#1F2048
Closest named color: Oxford Blue (#1B263B). oklch(26.7% 0.073 279.2), rgb(31, 32, 72).
Aa
White text reads best on this color (15.45:1).
About this color
#1F2048 is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.073 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.035 away. White text reads best on it, at 15.45:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.35:1 |
| White text | 15.45:1 |
Values
| HEX | #1F2048 |
| RGB | rgb(31, 32, 72) |
| HSL | hsl(239, 40%, 20%) |
| OKLCH | oklch(26.7% 0.073 279.2) |
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 #1F2048 | 15.45:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #1F2048 | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #1F2048 text on white | 15.45:1 | AAA | Lc 102.3 | Preferred for body text |
| #1F2048 text on black | 1.35:1 | 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
#E6E9FB
oklch(93.7% 0.024 278.4)
-
Step 200
200
#D2D7F9
oklch(88.6% 0.047 278.8)
-
Step 300
300
#B4BBF8
oklch(80.8% 0.086 279.2)
-
Step 400
400
#8F96F5
oklch(70.8% 0.138 279)
-
Step 500
500
#7678F1
oklch(63.1% 0.177 279.3)
-
Step 600
600
#615EDF
oklch(55.7% 0.191 279.2)
-
Step 700
700
#504CC2
oklch(49.1% 0.179 279)
-
Step 800
800
#423F9D
oklch(42.7% 0.148 279.5)
-
Step 900
900
#37377D
oklch(37.8% 0.116 279.3)
-
Step 950
950 (this color)
#1F2048
oklch(26.7% 0.073 279.2)
#1F2048 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) | #0D2649 | 0.028 |
| Deuteranopia (no green cones) | #092347 | 0.029 |
| Tritanopia (no blue cones) | #0E2930 | 0.064 |
| Achromatopsia (no color) | #242424 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F2048
#1F2048
oklch(26.7% 0.073 279.2)
- #2C2600
#2C2600
oklch(26.7% 0.056 100.3)
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 #1F2048, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.035
- Dark #1B2431 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.052
- Dark Indigo #1F0954 ΔE 0.057
- Marine #042E60 ΔE 0.059
- Jet #212529 ΔE 0.065
- Rich Black #0D1B2A ΔE 0.066
- Prussian Blue #1D3557 ΔE 0.067
Use #1F2048 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.