#1A273C
Closest named color: Oxford Blue (#1B263B). oklch(27.2% 0.043 259.7), rgb(26, 39, 60).
Aa
White text reads best on this color (15.00:1).
About this color
#1A273C is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.043 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.004 away. White text reads best on it, at 15.00:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.39:1 |
| White text | 15.00:1 |
Values
| HEX | #1A273C |
| RGB | rgb(26, 39, 60) |
| HSL | hsl(217, 40%, 17%) |
| OKLCH | oklch(27.2% 0.043 259.7) |
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 #1A273C | 15.00:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #1A273C | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #1A273C text on white | 15.00:1 | AAA | Lc 101.8 | Preferred for body text |
| #1A273C text on black | 1.39:1 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CEDAEC
oklch(88.5% 0.028 258.4)
-
Step 300
300
#ADC2E2
oklch(80.9% 0.051 258.7)
-
Step 400
400
#82A2D4
oklch(70.7% 0.082 259.2)
-
Step 500
500
#638AC9
oklch(63.1% 0.105 259.7)
-
Step 600
600
#4A73B5
oklch(55.6% 0.113 259.5)
-
Step 700
700
#3B609C
oklch(49.1% 0.106 259.6)
-
Step 800
800
#314F7F
oklch(42.8% 0.088 259.4)
-
Step 900
900
#2B4266
oklch(37.8% 0.068 259.1)
-
Step 950
950 (this color)
#1A273C
oklch(27.2% 0.043 259.7)
#1A273C 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) | #1F283D | 0.009 |
| Deuteranopia (no green cones) | #1B253C | 0.007 |
| Tritanopia (no blue cones) | #0B2C2E | 0.040 |
| Achromatopsia (no color) | #272727 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A273C
#1A273C
oklch(27.2% 0.043 259.7)
- #32240C
#32240C
oklch(27.1% 0.043 78.7)
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 #1A273C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.004
- Dark #1B2431 ΔE 0.021
- Jet #212529 ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.036
- Gunmetal #293241 ΔE 0.046
- Rich Black #0D1B2A ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.061
- Marine #042E60 ΔE 0.066
Use #1A273C 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.