#1A243A
Closest named color: Oxford Blue (#1B263B). oklch(26.2% 0.044 264.9), rgb(26, 36, 58).
Aa
White text reads best on this color (15.47:1).
About this color
#1A243A is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.044 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.007 away. White text reads best on it, at 15.47:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.35:1 |
| White text | 15.47:1 |
Values
| HEX | #1A243A |
| RGB | rgb(26, 36, 58) |
| HSL | hsl(221, 38%, 16%) |
| OKLCH | oklch(26.2% 0.044 264.9) |
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 #1A243A | 15.47:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #1A243A | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #1A243A text on white | 15.47:1 | AAA | Lc 102.4 | Preferred for body text |
| #1A243A text on black | 1.35:1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9ED
oklch(88.5% 0.029 266.4)
-
Step 300
300
#B0C1E3
oklch(80.9% 0.052 264.2)
-
Step 400
400
#87A0D5
oklch(70.7% 0.083 264.8)
-
Step 500
500
#6A88CA
oklch(63.2% 0.106 264.9)
-
Step 600
600
#5271B7
oklch(55.7% 0.115 264.9)
-
Step 700
700
#425E9D
oklch(49.1% 0.107 264.7)
-
Step 800
800
#374D80
oklch(42.8% 0.089 265.2)
-
Step 900
900
#2F4066
oklch(37.6% 0.069 265)
-
Step 950
950 (this color)
#1A243A
oklch(26.2% 0.044 264.9)
#1A243A 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) | #1C263B | 0.008 |
| Deuteranopia (no green cones) | #18233A | 0.005 |
| Tritanopia (no blue cones) | #0D292C | 0.040 |
| Achromatopsia (no color) | #242424 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A243A
#1A243A
oklch(26.2% 0.044 264.9)
- #2E2308
#2E2308
oklch(26.3% 0.044 86.5)
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 #1A243A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.007
- Dark #1B2431 ΔE 0.017
- Jet #212529 ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.044
- Rich Black #0D1B2A ΔE 0.046
- Gunmetal #293241 ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.070
- Marine #042E60 ΔE 0.072
Use #1A243A 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.