#15546F
Closest named color: Deep Sea Blue (#015482). oklch(42% 0.076 231.5), rgb(21, 84, 111).
Aa
White text reads best on this color (8.30:1).
About this color
#15546F is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.076 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.032 away. White text reads best on it, at 8.30:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.52:1 |
| White text | 8.30:1 |
Values
| HEX | #15546F |
| RGB | rgb(21, 84, 111) |
| HSL | hsl(198, 68%, 26%) |
| OKLCH | oklch(42% 0.076 231.5) |
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 #15546F | 8.30:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #15546F | 2.52:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #15546F text on white | 8.30:1 | AAA | Lc 88.3 | Fine for body text |
| #15546F text on black | 2.52:1 | Fails | Lc -13.8 | 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
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADCE7
oklch(88.4% 0.025 234.5)
-
Step 300
300
#A5C6D8
oklch(80.8% 0.044 231.9)
-
Step 400
400
#72A9C5
oklch(70.7% 0.071 231.2)
-
Step 500
500
#4A93B7
oklch(63.1% 0.091 232.1)
-
Step 600
600
#277DA2
oklch(55.6% 0.098 231.1)
-
Step 700
700
#17698B
oklch(49% 0.091 231.5)
-
Step 800
800 (this color)
#15546F
oklch(42% 0.076 231.5)
-
Step 900
900
#1B475B
oklch(37.7% 0.059 230.9)
-
Step 950
950
#112A35
oklch(27.1% 0.037 229)
#15546F 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) | #465370 | 0.050 |
| Deuteranopia (no green cones) | #3A4A6F | 0.043 |
| Tritanopia (no blue cones) | #005B5D | 0.044 |
| Achromatopsia (no color) | #4E4E4E | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15546F
#15546F
oklch(42% 0.076 231.5)
- #6D4024
#6D4024
oklch(41.9% 0.075 51.3)
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 #15546F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.032
- Petrol #005F6A ΔE 0.039
- Deep Teal #00555A ΔE 0.039
- Light Navy #155084 ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.050
- YInMn Blue #415A77 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.053
Use #15546F 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.