#15507E
Closest named color: Light Navy (#155084). oklch(41.9% 0.097 246.9), rgb(21, 80, 126).
Aa
White text reads best on this color (8.46:1).
About this color
#15507E is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.097 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.010 away. White text reads best on it, at 8.46:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.48:1 |
| White text | 8.46:1 |
Values
| HEX | #15507E |
| RGB | rgb(21, 80, 126) |
| HSL | hsl(206, 71%, 29%) |
| OKLCH | oklch(41.9% 0.097 246.9) |
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 #15507E | 8.46:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #15507E | 2.48:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #15507E text on white | 8.46:1 | AAA | Lc 88.8 | Fine for body text |
| #15507E text on black | 2.48:1 | Fails | Lc -13.4 | 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 800.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A4C5E4
oklch(81% 0.057 246.9)
-
Step 400
400
#71A6D6
oklch(70.7% 0.09 246.8)
-
Step 500
500
#498FCB
oklch(63.1% 0.115 246.8)
-
Step 600
600
#2778B8
oklch(55.6% 0.125 246.9)
-
Step 700
700
#18659F
oklch(49.2% 0.117 246.8)
-
Step 800
800 (this color)
#15507E
oklch(41.9% 0.097 246.9)
-
Step 900
900
#1B4467
oklch(37.6% 0.076 247.3)
-
Step 950
950
#11283C
oklch(26.9% 0.047 246.9)
#15507E 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) | #3A5280 | 0.036 |
| Deuteranopia (no green cones) | #2B497D | 0.025 |
| Tritanopia (no blue cones) | #005B61 | 0.068 |
| Achromatopsia (no color) | #4D4D4D | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15507E
#15507E
oklch(41.9% 0.097 246.9)
- #6E4100
#6E4100
oklch(42% 0.093 66.8)
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 #15507E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.010
- Deep Sea Blue #015482 ΔE 0.013
- Dusk Blue #26538D ΔE 0.030
- Cobalt #1E488F ΔE 0.040
- Twilight Blue #0A437A ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.041
- YInMn Blue #415A77 ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.059
Use #15507E 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.