#131640
Closest named color: Navy Blue (#001146). oklch(22.7% 0.079 275.1), rgb(19, 22, 64).
Aa
White text reads best on this color (17.26:1).
About this color
#131640 is a very dark, moderately saturated blue. In OKLCH its lightness is 23%, its chroma 0.079 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.035 away. White text reads best on it, at 17.26:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.21:1 |
| White text | 17.26:1 |
Values
| HEX | #131640 |
| RGB | rgb(19, 22, 64) |
| HSL | hsl(236, 54%, 16%) |
| OKLCH | oklch(22.7% 0.079 275.1) |
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 #131640 | 17.26:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #131640 | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #131640 text on white | 17.26:1 | AAA | Lc 103.9 | Preferred for body text |
| #131640 text on black | 1.21:1 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CFD7FC
oklch(88.5% 0.052 275.7)
-
Step 300
300
#AFBCFD
oklch(80.9% 0.093 275.4)
-
Step 400
400
#8797FC
oklch(70.8% 0.148 275.2)
-
Step 500
500
#6B79FA
oklch(63.1% 0.19 274.9)
-
Step 600
600
#565DE9
oklch(55.5% 0.208 275.2)
-
Step 700
700
#474CCB
oklch(49.2% 0.193 275)
-
Step 800
800
#3A3FA4
oklch(42.7% 0.16 275.2)
-
Step 900
900
#313782
oklch(37.7% 0.125 275.2)
-
Step 950
950 (this color)
#131640
oklch(22.7% 0.079 275.1)
#131640 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) | #001D41 | 0.028 |
| Deuteranopia (no green cones) | #00193F | 0.025 |
| Tritanopia (no blue cones) | #002028 | 0.066 |
| Achromatopsia (no color) | #1B1B1B | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131640
#131640
oklch(22.7% 0.079 275.1)
- #231C00
#231C00
oklch(22.8% 0.047 96)
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 #131640, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.035
- Dark Indigo #1F0954 ΔE 0.048
- Rich Black #0D1B2A ΔE 0.049
- Night Blue #040348 ΔE 0.056
- Oxford Blue #1B263B ΔE 0.057
- Dark #1B2431 ΔE 0.061
- Midnight Purple #280137 ΔE 0.066
- Very Dark Purple #2A0134 ΔE 0.071
Use #131640 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.