#15344C
Closest named color: Prussian Blue (#1D3557). oklch(31.4% 0.057 244.5), rgb(21, 52, 76).
Aa
White text reads best on this color (12.90:1).
About this color
#15344C is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.057 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.022 away. White text reads best on it, at 12.90:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.62:1 |
| White text | 12.90:1 |
Values
| HEX | #15344C |
| RGB | rgb(21, 52, 76) |
| HSL | hsl(206, 57%, 19%) |
| OKLCH | oklch(31.4% 0.057 244.5) |
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 #15344C | 12.90:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #15344C | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #15344C text on white | 12.90:1 | AAA | Lc 98.9 | Preferred for body text |
| #15344C text on black | 1.62:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF6
oklch(93.7% 0.019 243)
-
Step 200
200
#C5DCF1
oklch(88.4% 0.038 245.8)
-
Step 300
300
#9CC6EA
oklch(80.9% 0.068 244.6)
-
Step 400
400
#63A8DF
oklch(70.8% 0.107 244.2)
-
Step 500
500
#2E90D6
oklch(63% 0.137 244.6)
-
Step 600
600
#0079BE
oklch(55.6% 0.139 244.6)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900
#07456D
oklch(37.7% 0.089 244.4)
-
Step 950
950 (this color)
#15344C
oklch(31.4% 0.057 244.5)
#15344C 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) | #29354D | 0.025 |
| Deuteranopia (no green cones) | #222F4C | 0.021 |
| Tritanopia (no blue cones) | #003A3C | 0.043 |
| Achromatopsia (no color) | #323232 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15344C
#15344C
oklch(31.4% 0.057 244.5)
- #452B0F
#452B0F
oklch(31.5% 0.056 65)
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 #15344C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.022
- Midnight Green #073B4C ΔE 0.024
- Dark Blue Grey #1F3B4D ΔE 0.027
- Gunmetal #293241 ΔE 0.029
- Space Cadet #2B2D42 ΔE 0.035
- Marine #042E60 ΔE 0.046
- Oxford Blue #1B263B ΔE 0.050
- Marine Blue #01386A ΔE 0.053
Use #15344C 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.