#1B2645
Closest named color: Oxford Blue (#1B263B). oklch(27.6% 0.06 267.7), rgb(27, 38, 69).
Aa
White text reads best on this color (14.89:1).
About this color
#1B2645 is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.060 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.019 away. White text reads best on it, at 14.89:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.40:1 |
| White text | 14.89:1 |
Values
| HEX | #1B2645 |
| RGB | rgb(27, 38, 69) |
| HSL | hsl(224, 44%, 19%) |
| OKLCH | oklch(27.6% 0.06 267.7) |
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 #1B2645 | 14.89:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #1B2645 | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #1B2645 text on white | 14.89:1 | AAA | Lc 101.7 | Preferred for body text |
| #1B2645 text on black | 1.40:1 | 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
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F4
oklch(88.5% 0.039 267.9)
-
Step 300
300
#ADC0EF
oklch(81% 0.07 267.6)
-
Step 400
400
#829EE7
oklch(70.8% 0.112 267.5)
-
Step 500
500
#6384E0
oklch(63.1% 0.144 267.4)
-
Step 600
600
#4B6BCE
oklch(55.5% 0.157 267.6)
-
Step 700
700
#3D59B2
oklch(49.1% 0.145 267.7)
-
Step 800
800
#324990
oklch(42.6% 0.12 267.6)
-
Step 900
900
#2C3E73
oklch(37.7% 0.093 267.7)
-
Step 950
950 (this color)
#1B2645
oklch(27.6% 0.06 267.7)
#1B2645 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) | #192946 | 0.010 |
| Deuteranopia (no green cones) | #142544 | 0.011 |
| Tritanopia (no blue cones) | #052D32 | 0.054 |
| Achromatopsia (no color) | #272727 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B2645
#1B2645
oklch(27.6% 0.06 267.7)
- #332600
#332600
oklch(27.6% 0.056 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 #1B2645, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.019
- Dark #1B2431 ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.038
- Gunmetal #293241 ΔE 0.050
- Jet #212529 ΔE 0.053
- Marine #042E60 ΔE 0.053
- Prussian Blue #1D3557 ΔE 0.054
- Rich Black #0D1B2A ΔE 0.064
Use #1B2645 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.