#1B224E
Closest named color: Oxford Blue (#1B263B). oklch(27.3% 0.081 273.1), rgb(27, 34, 78).
Aa
White text reads best on this color (15.15:1).
About this color
#1B224E is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.081 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.040 away. White text reads best on it, at 15.15:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.38:1 |
| White text | 15.15:1 |
Values
| HEX | #1B224E |
| RGB | rgb(27, 34, 78) |
| HSL | hsl(232, 49%, 21%) |
| OKLCH | oklch(27.3% 0.081 273.1) |
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 #1B224E | 15.15:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #1B224E | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #1B224E text on white | 15.15:1 | AAA | Lc 101.9 | Preferred for body text |
| #1B224E text on black | 1.38:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CDD8FD
oklch(88.6% 0.052 272.2)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8297FF
oklch(70.6% 0.154 273.2)
-
Step 500
500
#6679FD
oklch(63% 0.196 273.3)
-
Step 600
600
#505EED
oklch(55.7% 0.213 273)
-
Step 700
700
#424CCE
oklch(49.1% 0.198 273.2)
-
Step 800
800
#363FA6
oklch(42.6% 0.164 273.4)
-
Step 900
900
#2E3784
oklch(37.7% 0.128 273.5)
-
Step 950
950 (this color)
#1B224E
oklch(27.3% 0.081 273.1)
#1B224E 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) | #0A2850 | 0.024 |
| Deuteranopia (no green cones) | #01244D | 0.028 |
| Tritanopia (no blue cones) | #002C34 | 0.070 |
| Achromatopsia (no color) | #262626 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B224E
#1B224E
oklch(27.3% 0.081 273.1)
- #312600
#312600
oklch(27.3% 0.056 92.2)
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 #1B224E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.040
- Marine #042E60 ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.054
- Dark #1B2431 ΔE 0.057
- Dark Indigo #1F0954 ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.060
- Midnight Blue #191970 ΔE 0.065
- Gunmetal #293241 ΔE 0.067
Use #1B224E 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.