#125773
Closest named color: Deep Sea Blue (#015482). oklch(43% 0.079 230.9), rgb(18, 87, 115).
Aa
White text reads best on this color (7.96:1).
About this color
#125773 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.079 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.030 away. White text reads best on it, at 7.96:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.63:1 |
| White text | 7.96:1 |
Values
| HEX | #125773 |
| RGB | rgb(18, 87, 115) |
| HSL | hsl(197, 73%, 26%) |
| OKLCH | oklch(43% 0.079 230.9) |
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 #125773 | 7.96:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #125773 | 2.63:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #125773 text on white | 7.96:1 | AAA | Lc 87.3 | Fine for body text |
| #125773 text on black | 2.63:1 | Fails | Lc -14.9 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE7
oklch(88.6% 0.025 229.2)
-
Step 300
300
#A3C7D9
oklch(80.9% 0.046 229.7)
-
Step 400
400
#6FA9C7
oklch(70.6% 0.075 231.8)
-
Step 500
500
#4594B8
oklch(63.2% 0.094 230.5)
-
Step 600
600
#1D7DA4
oklch(55.5% 0.103 231)
-
Step 700
700
#0B6A8D
oklch(49.2% 0.096 230.7)
-
Step 800
800 (this color)
#125773
oklch(43% 0.079 230.9)
-
Step 900
900
#18475C
oklch(37.6% 0.062 231)
-
Step 950
950
#102A36
oklch(27.1% 0.039 230.5)
#125773 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) | #495674 | 0.054 |
| Deuteranopia (no green cones) | #3C4D73 | 0.045 |
| Tritanopia (no blue cones) | #005F60 | 0.047 |
| Achromatopsia (no color) | #515151 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #125773
#125773
oklch(43% 0.079 230.9)
- #724224
#724224
oklch(43% 0.08 51.2)
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 #125773, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.030
- Petrol #005F6A ΔE 0.034
- Light Navy #155084 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.043
- Deep Teal #00555A ΔE 0.044
- YInMn Blue #415A77 ΔE 0.045
- Dusk Blue #26538D ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.058
Use #125773 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.