#1C213D
Closest named color: Oxford Blue (#1B263B). oklch(25.8% 0.053 274.4), rgb(28, 33, 61).
Aa
White text reads best on this color (15.73:1).
About this color
#1C213D is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.053 and its hue 274°. 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 15.73:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.33:1 |
| White text | 15.73:1 |
Values
| HEX | #1C213D |
| RGB | rgb(28, 33, 61) |
| HSL | hsl(231, 37%, 17%) |
| OKLCH | oklch(25.8% 0.053 274.4) |
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 #1C213D | 15.73:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #1C213D | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #1C213D text on white | 15.73:1 | AAA | Lc 102.6 | Preferred for body text |
| #1C213D 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F1
oklch(88.5% 0.035 274.9)
-
Step 300
300
#B4BEEA
oklch(80.9% 0.063 274.9)
-
Step 400
400
#8D9CDF
oklch(70.7% 0.1 273.9)
-
Step 500
500
#7382D6
oklch(63.2% 0.127 274.5)
-
Step 600
600
#5C6AC4
oklch(55.7% 0.139 274.3)
-
Step 700
700
#4C58A9
oklch(49.2% 0.129 274.3)
-
Step 800
800
#3E4889
oklch(42.7% 0.108 274.4)
-
Step 900
900
#353D6E
oklch(37.8% 0.084 274.7)
-
Step 950
950 (this color)
#1C213D
oklch(25.8% 0.053 274.4)
#1C213D 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) | #16243E | 0.012 |
| Deuteranopia (no green cones) | #13223C | 0.014 |
| Tritanopia (no blue cones) | #10272C | 0.047 |
| Achromatopsia (no color) | #232323 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C213D
#1C213D
oklch(25.8% 0.053 274.4)
- #2C2300
#2C2300
oklch(25.9% 0.053 94.6)
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 #1C213D, 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 0.028
- Jet #212529 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.049
- Gunmetal #293241 ΔE 0.062
- Navy Blue #001146 ΔE 0.070
- Marine #042E60 ΔE 0.071
Use #1C213D 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.