#191A41
Closest named color: Oxford Blue (#1B263B). oklch(24.2% 0.072 278.4), rgb(25, 26, 65).
Aa
White text reads best on this color (16.59:1).
About this color
#191A41 is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.072 and its hue 278°. 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 16.59:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.26:1 |
| White text | 16.59:1 |
Values
| HEX | #191A41 |
| RGB | rgb(25, 26, 65) |
| HSL | hsl(239, 44%, 18%) |
| OKLCH | oklch(24.2% 0.072 278.4) |
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 #191A41 | 16.59:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #191A41 | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #191A41 text on white | 16.59:1 | AAA | Lc 103.4 | Preferred for body text |
| #191A41 text on black | 1.26:1 | 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
#D1D7F9
oklch(88.5% 0.047 277.5)
-
Step 300
300
#B4BCF8
oklch(81% 0.085 278.4)
-
Step 400
400
#8E96F4
oklch(70.6% 0.137 278.6)
-
Step 500
500
#7479F0
oklch(63% 0.175 278.3)
-
Step 600
600
#5F5FDF
oklch(55.7% 0.19 278.3)
-
Step 700
700
#4F4DC1
oklch(49.1% 0.176 278.4)
-
Step 800
800
#40409C
oklch(42.6% 0.146 278.2)
-
Step 900
900
#36377C
oklch(37.6% 0.114 278.7)
-
Step 950
950 (this color)
#191A41
oklch(24.2% 0.072 278.4)
#191A41 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) | #052042 | 0.028 |
| Deuteranopia (no green cones) | #011D40 | 0.031 |
| Tritanopia (no blue cones) | #06232A | 0.064 |
| Achromatopsia (no color) | #1E1E1E | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #191A41
#191A41
oklch(24.2% 0.072 278.4)
- #262000
#262000
oklch(24.3% 0.05 99.1)
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 #191A41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.043
- Navy Blue #001146 ΔE 0.049
- Dark #1B2431 ΔE 0.050
- Rich Black #0D1B2A ΔE 0.050
- Dark Indigo #1F0954 ΔE 0.051
- Jet #212529 ΔE 0.067
- Midnight Purple #280137 ΔE 0.068
- Dark Purple #35063E ΔE 0.071
Use #191A41 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.