#19213B
Closest named color: Oxford Blue (#1B263B). oklch(25.4% 0.051 269.6), rgb(25, 33, 59).
Aa
White text reads best on this color (15.88:1).
About this color
#19213B is a dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.051 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.018 away. White text reads best on it, at 15.88:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.32:1 |
| White text | 15.88:1 |
Values
| HEX | #19213B |
| RGB | rgb(25, 33, 59) |
| HSL | hsl(226, 40%, 16%) |
| OKLCH | oklch(25.4% 0.051 269.6) |
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 #19213B | 15.88:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #19213B | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #19213B text on white | 15.88:1 | AAA | Lc 102.8 | Preferred for body text |
| #19213B text on black | 1.32:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F0
oklch(88.6% 0.033 268.7)
-
Step 300
300
#B1C0E8
oklch(81% 0.059 268.9)
-
Step 400
400
#899EDD
oklch(70.7% 0.096 269.7)
-
Step 500
500
#6C85D4
oklch(63.2% 0.123 269.4)
-
Step 600
600
#556DC1
oklch(55.7% 0.133 269.7)
-
Step 700
700
#455AA6
oklch(49% 0.124 269.7)
-
Step 800
800
#394A87
oklch(42.7% 0.103 269.9)
-
Step 900
900
#313E6C
oklch(37.6% 0.081 270.3)
-
Step 950
950 (this color)
#19213B
oklch(25.4% 0.051 269.6)
#19213B 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) | #17243C | 0.010 |
| Deuteranopia (no green cones) | #13213A | 0.009 |
| Tritanopia (no blue cones) | #0B272B | 0.046 |
| Achromatopsia (no color) | #222222 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19213B
#19213B
oklch(25.4% 0.051 269.6)
- #2C2101
#2C2101
oklch(25.4% 0.051 89.8)
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 #19213B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.018
- Dark #1B2431 ΔE 0.024
- Rich Black #0D1B2A ΔE 0.042
- Jet #212529 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.053
- Gunmetal #293241 ΔE 0.065
- Navy Blue #001146 ΔE 0.068
- Marine #042E60 ΔE 0.074
Use #19213B 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.