#125573
Closest named color: Deep Sea Blue (#015482). oklch(42.4% 0.08 233.3), rgb(18, 85, 115).
Aa
White text reads best on this color (8.16:1).
About this color
#125573 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.080 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.027 away. White text reads best on it, at 8.16:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.57:1 |
| White text | 8.16:1 |
Values
| HEX | #125573 |
| RGB | rgb(18, 85, 115) |
| HSL | hsl(199, 73%, 26%) |
| OKLCH | oklch(42.4% 0.08 233.3) |
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 #125573 | 8.16:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #125573 | 2.57:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #125573 text on white | 8.16:1 | AAA | Lc 87.9 | Fine for body text |
| #125573 text on black | 2.57:1 | Fails | Lc -14.3 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A4C6DA
oklch(80.8% 0.046 233.9)
-
Step 400
400
#70A9C8
oklch(70.7% 0.075 233.1)
-
Step 500
500
#4693BA
oklch(63.1% 0.096 233.2)
-
Step 600
600
#207DA6
oklch(55.6% 0.104 232.8)
-
Step 700
700
#10698F
oklch(49.1% 0.097 233.6)
-
Step 800
800 (this color)
#125573
oklch(42.4% 0.08 233.3)
-
Step 900
900
#19475D
oklch(37.7% 0.062 232.6)
-
Step 950
950
#102A37
oklch(27.1% 0.04 232.6)
#125573 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) | #465474 | 0.050 |
| Deuteranopia (no green cones) | #394B73 | 0.043 |
| Tritanopia (no blue cones) | #005D5F | 0.049 |
| Achromatopsia (no color) | #4F4F4F | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #125573
#125573
oklch(42.4% 0.08 233.3)
- #704120
#704120
oklch(42.5% 0.08 53.7)
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 #125573, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.027
- Light Navy #155084 ΔE 0.036
- Petrol #005F6A ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.044
- Deep Teal #00555A ΔE 0.045
- YInMn Blue #415A77 ΔE 0.048
- Dusk Blue #26538D ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.054
Use #125573 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.