#172142
Closest named color: Oxford Blue (#1B263B). oklch(25.8% 0.064 268.9), rgb(23, 33, 66).
Aa
White text reads best on this color (15.75:1).
About this color
#172142 is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.064 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.025 away. White text reads best on it, at 15.75:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.33:1 |
| White text | 15.75:1 |
Values
| HEX | #172142 |
| RGB | rgb(23, 33, 66) |
| HSL | hsl(226, 48%, 17%) |
| OKLCH | oklch(25.8% 0.064 268.9) |
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 #172142 | 15.75:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #172142 | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #172142 text on white | 15.75:1 | AAA | Lc 102.6 | Preferred for body text |
| #172142 text on black | 1.33:1 | 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
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F6
oklch(88.6% 0.042 269)
-
Step 300
300
#ACBFF2
oklch(80.8% 0.075 268.8)
-
Step 400
400
#829DEC
oklch(70.8% 0.12 268.9)
-
Step 500
500
#6482E6
oklch(63.1% 0.154 269.1)
-
Step 600
600
#4C69D4
oklch(55.6% 0.168 269)
-
Step 700
700
#3D57B8
oklch(49.1% 0.156 268.7)
-
Step 800
800
#334895
oklch(42.8% 0.129 268.9)
-
Step 900
900
#2C3D76
oklch(37.7% 0.099 268.8)
-
Step 950
950 (this color)
#172142
oklch(25.8% 0.064 268.9)
#172142 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) | #122543 | 0.013 |
| Deuteranopia (no green cones) | #0C2141 | 0.014 |
| Tritanopia (no blue cones) | #00282E | 0.056 |
| Achromatopsia (no color) | #232323 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172142
#172142
oklch(25.8% 0.064 268.9)
- #2E2200
#2E2200
oklch(25.9% 0.053 89.1)
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 #172142, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.025
- Dark #1B2431 ΔE 0.037
- Rich Black #0D1B2A ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.054
- Jet #212529 ΔE 0.055
- Navy Blue #001146 ΔE 0.062
- Marine #042E60 ΔE 0.063
- Dark Indigo #1F0954 ΔE 0.067
Use #172142 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.