#191C38
Closest named color: Oxford Blue (#1B263B). oklch(24% 0.053 277), rgb(25, 28, 56).
Aa
White text reads best on this color (16.60:1).
About this color
#191C38 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.053 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.034 away. White text reads best on it, at 16.60:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.26:1 |
| White text | 16.60:1 |
Values
| HEX | #191C38 |
| RGB | rgb(25, 28, 56) |
| HSL | hsl(234, 38%, 16%) |
| OKLCH | oklch(24% 0.053 277) |
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 #191C38 | 16.60:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #191C38 | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #191C38 text on white | 16.60:1 | AAA | Lc 103.5 | Preferred for body text |
| #191C38 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D3D8F1
oklch(88.6% 0.035 276.7)
-
Step 300
300
#B6BEEA
oklch(81% 0.063 276.8)
-
Step 400
400
#909BDF
oklch(70.7% 0.1 276.5)
-
Step 500
500
#7680D6
oklch(63% 0.129 277)
-
Step 600
600
#6068C4
oklch(55.6% 0.141 277)
-
Step 700
700
#5056A9
oklch(49.1% 0.131 277.3)
-
Step 800
800
#414789
oklch(42.7% 0.108 276.9)
-
Step 900
900
#373C6E
oklch(37.7% 0.085 277.2)
-
Step 950
950 (this color)
#191C38
oklch(24% 0.053 277)
#191C38 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) | #112039 | 0.016 |
| Deuteranopia (no green cones) | #0E1D37 | 0.017 |
| Tritanopia (no blue cones) | #0E2227 | 0.047 |
| Achromatopsia (no color) | #1E1E1E | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #191C38
#191C38
oklch(24% 0.053 277)
- #261F00
#261F00
oklch(24% 0.05 96.9)
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 #191C38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.034
- Dark #1B2431 ΔE 0.034
- Rich Black #0D1B2A ΔE 0.034
- Jet #212529 ΔE 0.051
- Navy Blue #001146 ΔE 0.060
- Space Cadet #2B2D42 ΔE 0.067
- Dark Indigo #1F0954 ΔE 0.069
- Midnight Purple #280137 ΔE 0.073
Use #191C38 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.