#191E41
Closest named color: Oxford Blue (#1B263B). oklch(25.1% 0.066 274.5), rgb(25, 30, 65).
Aa
White text reads best on this color (16.11:1).
About this color
#191E41 is a dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.066 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.031 away. White text reads best on it, at 16.11:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.11:1 |
Values
| HEX | #191E41 |
| RGB | rgb(25, 30, 65) |
| HSL | hsl(233, 44%, 18%) |
| OKLCH | oklch(25.1% 0.066 274.5) |
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 #191E41 | 16.11:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #191E41 | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #191E41 text on white | 16.11:1 | AAA | Lc 103.0 | Preferred for body text |
| #191E41 text on black | 1.30:1 | 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
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F7
oklch(88.6% 0.044 274)
-
Step 300
300
#B1BDF4
oklch(80.8% 0.079 274.9)
-
Step 400
400
#899AEE
oklch(70.8% 0.124 274.1)
-
Step 500
500
#6E7EE8
oklch(63.1% 0.159 274.5)
-
Step 600
600
#5865D7
oklch(55.7% 0.173 274.4)
-
Step 700
700
#4853BA
oklch(49.1% 0.161 274.3)
-
Step 800
800
#3B4496
oklch(42.6% 0.133 274.6)
-
Step 900
900
#323A78
oklch(37.6% 0.105 274.7)
-
Step 950
950 (this color)
#191E41
oklch(25.1% 0.066 274.5)
#191E41 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) | #0E2342 | 0.020 |
| Deuteranopia (no green cones) | #091F40 | 0.021 |
| Tritanopia (no blue cones) | #06262C | 0.059 |
| Achromatopsia (no color) | #212121 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #191E41
#191E41
oklch(25.1% 0.066 274.5)
- #2A2100
#2A2100
oklch(25.1% 0.051 93.9)
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 #191E41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.031
- Dark #1B2431 ΔE 0.041
- Rich Black #0D1B2A ΔE 0.049
- Navy Blue #001146 ΔE 0.057
- Jet #212529 ΔE 0.059
- Dark Indigo #1F0954 ΔE 0.060
- Space Cadet #2B2D42 ΔE 0.061
- Marine #042E60 ΔE 0.070
Use #191E41 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.