#12507D
Closest named color: Light Navy (#155084). oklch(41.7% 0.096 245.7), rgb(18, 80, 125).
Aa
White text reads best on this color (8.50:1).
About this color
#12507D is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.096 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.012 away. White text reads best on it, at 8.50:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.46:1 |
| White text | 8.50:1 |
Values
| HEX | #12507D |
| RGB | rgb(18, 80, 125) |
| HSL | hsl(205, 75%, 28%) |
| OKLCH | oklch(41.7% 0.096 245.7) |
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 #12507D | 8.50:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #12507D | 2.46:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #12507D text on white | 8.50:1 | AAA | Lc 88.9 | Fine for body text |
| #12507D text on black | 2.46:1 | Fails | Lc -13.3 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
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
#A3C5E3
oklch(80.9% 0.056 245.2)
-
Step 400
400
#70A6D5
oklch(70.6% 0.09 245.8)
-
Step 500
500
#478FCA
oklch(63% 0.115 245.8)
-
Step 600
600
#2479B7
oklch(55.7% 0.124 245.3)
-
Step 700
700
#15659E
oklch(49.1% 0.116 245.9)
-
Step 800
800 (this color)
#12507D
oklch(41.7% 0.096 245.7)
-
Step 900
900
#1A4567
oklch(37.8% 0.075 245.6)
-
Step 950
950
#11283C
oklch(26.9% 0.047 246.9)
#12507D 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) | #3B527F | 0.039 |
| Deuteranopia (no green cones) | #2B487C | 0.028 |
| Tritanopia (no blue cones) | #005B60 | 0.068 |
| Achromatopsia (no color) | #4D4D4D | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12507D
#12507D
oklch(41.7% 0.096 245.7)
- #6E4000
#6E4000
oklch(41.8% 0.093 65.7)
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 #12507D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.012
- Deep Sea Blue #015482 ΔE 0.013
- Dusk Blue #26538D ΔE 0.032
- Twilight Blue #0A437A ΔE 0.040
- Cobalt #1E488F ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.043
- YInMn Blue #415A77 ΔE 0.059
- Dark Grey Blue #29465B ΔE 0.059
Use #12507D 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.