#19203D
Closest named color: Oxford Blue (#1B263B). oklch(25.3% 0.056 271.7), rgb(25, 32, 61).
Aa
White text reads best on this color (15.96:1).
About this color
#19203D is a dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.056 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.022 away. White text reads best on it, at 15.96:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.31:1 |
| White text | 15.96:1 |
Values
| HEX | #19203D |
| RGB | rgb(25, 32, 61) |
| HSL | hsl(228, 42%, 17%) |
| OKLCH | oklch(25.3% 0.056 271.7) |
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 #19203D | 15.96:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #19203D | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #19203D text on white | 15.96:1 | AAA | Lc 102.8 | Preferred for body text |
| #19203D text on black | 1.31:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D0D8F2
oklch(88.4% 0.037 272)
-
Step 300
300
#B1BFEC
oklch(80.9% 0.066 271.4)
-
Step 400
400
#899CE3
oklch(70.6% 0.106 272)
-
Step 500
500
#6D82DB
oklch(63% 0.136 272)
-
Step 600
600
#566AC8
oklch(55.6% 0.147 271.8)
-
Step 700
700
#4658AD
oklch(49.1% 0.136 271.5)
-
Step 800
800
#3A488C
oklch(42.6% 0.113 272)
-
Step 900
900
#313D70
oklch(37.6% 0.088 271.6)
-
Step 950
950 (this color)
#19203D
oklch(25.3% 0.056 271.7)
#19203D 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) | #14233E | 0.011 |
| Deuteranopia (no green cones) | #10203C | 0.013 |
| Tritanopia (no blue cones) | #09262B | 0.049 |
| Achromatopsia (no color) | #222222 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19203D
#19203D
oklch(25.3% 0.056 271.7)
- #2B2100
#2B2100
oklch(25.2% 0.052 92.1)
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 #19203D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.022
- Dark #1B2431 ΔE 0.030
- Rich Black #0D1B2A ΔE 0.044
- Jet #212529 ΔE 0.048
- Space Cadet #2B2D42 ΔE 0.055
- Navy Blue #001146 ΔE 0.064
- Gunmetal #293241 ΔE 0.068
- Dark Indigo #1F0954 ΔE 0.071
Use #19203D 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.