#1D2145
Closest named color: Oxford Blue (#1B263B). oklch(26.5% 0.067 276.1), rgb(29, 33, 69).
Aa
White text reads best on this color (15.48:1).
About this color
#1D2145 is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.067 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.028 away. White text reads best on it, at 15.48:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.35:1 |
| White text | 15.48:1 |
Values
| HEX | #1D2145 |
| RGB | rgb(29, 33, 69) |
| HSL | hsl(234, 41%, 19%) |
| OKLCH | oklch(26.5% 0.067 276.1) |
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 #1D2145 | 15.48:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #1D2145 | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #1D2145 text on white | 15.48:1 | AAA | Lc 102.3 | Preferred for body text |
| #1D2145 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D1D7F7
oklch(88.5% 0.044 277.1)
-
Step 300
300
#B2BDF4
oklch(80.9% 0.079 275.7)
-
Step 400
400
#8C99EF
oklch(70.8% 0.126 276.1)
-
Step 500
500
#717DE9
oklch(63.2% 0.161 276)
-
Step 600
600
#5B63D7
oklch(55.6% 0.175 276.1)
-
Step 700
700
#4B51BB
oklch(49% 0.164 276.1)
-
Step 800
800
#3D4397
oklch(42.6% 0.136 275.9)
-
Step 900
900
#343A78
oklch(37.8% 0.104 276)
-
Step 950
950 (this color)
#1D2145
oklch(26.5% 0.067 276.1)
#1D2145 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) | #112646 | 0.021 |
| Deuteranopia (no green cones) | #0D2344 | 0.022 |
| Tritanopia (no blue cones) | #0C292F | 0.059 |
| Achromatopsia (no color) | #242424 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D2145
#1D2145
oklch(26.5% 0.067 276.1)
- #2D2500
#2D2500
oklch(26.6% 0.055 96.8)
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 #1D2145, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.028
- Dark #1B2431 ΔE 0.042
- Space Cadet #2B2D42 ΔE 0.049
- Jet #212529 ΔE 0.059
- Marine #042E60 ΔE 0.060
- Rich Black #0D1B2A ΔE 0.060
- Dark Indigo #1F0954 ΔE 0.063
- Gunmetal #293241 ΔE 0.064
Use #1D2145 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.