#151A45
Closest named color: Navy Blue (#001146). oklch(24.2% 0.08 273.8), rgb(21, 26, 69).
Aa
White text reads best on this color (16.59:1).
About this color
#151A45 is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.080 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.042 away. White text reads best on it, at 16.59:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.26:1 |
| White text | 16.59:1 |
Values
| HEX | #151A45 |
| RGB | rgb(21, 26, 69) |
| HSL | hsl(234, 53%, 18%) |
| OKLCH | oklch(24.2% 0.08 273.8) |
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 #151A45 | 16.59:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #151A45 | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #151A45 text on white | 16.59:1 | AAA | Lc 103.3 | Preferred for body text |
| #151A45 text on black | 1.26:1 | 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
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CED7FD
oklch(88.4% 0.053 274.8)
-
Step 300
300
#ADBDFE
oklch(81% 0.094 273.5)
-
Step 400
400
#8497FE
oklch(70.7% 0.152 274)
-
Step 500
500
#6879FC
oklch(63.1% 0.194 273.9)
-
Step 600
600
#525EEC
oklch(55.7% 0.211 273.6)
-
Step 700
700
#444CCD
oklch(49.2% 0.196 273.9)
-
Step 800
800
#373FA6
oklch(42.7% 0.163 273.8)
-
Step 900
900
#2F3783
oklch(37.6% 0.127 274.1)
-
Step 950
950 (this color)
#151A45
oklch(24.2% 0.08 273.8)
#151A45 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) | #002146 | 0.029 |
| Deuteranopia (no green cones) | #001C44 | 0.025 |
| Tritanopia (no blue cones) | #00242C | 0.068 |
| Achromatopsia (no color) | #1E1E1E | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151A45
#151A45
oklch(24.2% 0.08 273.8)
- #281F00
#281F00
oklch(24.3% 0.05 93.2)
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 #151A45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.042
- Dark Indigo #1F0954 ΔE 0.047
- Oxford Blue #1B263B ΔE 0.048
- Rich Black #0D1B2A ΔE 0.055
- Dark #1B2431 ΔE 0.056
- Night Blue #040348 ΔE 0.066
- Darkblue #030764 ΔE 0.072
- Marine #042E60 ΔE 0.073
Use #151A45 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.