#15475F
Closest named color: Dark Grey Blue (#29465B). oklch(37.7% 0.066 233.5), rgb(21, 71, 95).
Aa
White text reads best on this color (10.00:1).
About this color
#15475F is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.066 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.018 away. White text reads best on it, at 10.00:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.09:1 |
| White text | 10.00:1 |
Values
| HEX | #15475F |
| RGB | rgb(21, 71, 95) |
| HSL | hsl(199, 64%, 23%) |
| OKLCH | oklch(37.7% 0.066 233.5) |
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 #15475F | 10.00:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #15475F | 2.09:1 | Fails | Lc 11.0 | Not readable |
| #15475F text on white | 10.00:1 | AAA | Lc 93.0 | Preferred for body text |
| #15475F text on black | 2.09:1 | Fails | Lc -9.5 | 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 900.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE9
oklch(88.6% 0.028 232.7)
-
Step 300
300
#A2C7DC
oklch(81% 0.049 233.1)
-
Step 400
400
#6DA9CB
oklch(70.7% 0.08 234.4)
-
Step 500
500
#4093BD
oklch(63% 0.102 233.7)
-
Step 600
600
#147DA9
oklch(55.6% 0.11 233.3)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#0A5676
oklch(42.7% 0.085 233.5)
-
Step 900
900 (this color)
#15475F
oklch(37.7% 0.066 233.5)
-
Step 950
950
#0E2A38
oklch(27.1% 0.042 233.2)
#15475F 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) | #3B4660 | 0.042 |
| Deuteranopia (no green cones) | #313F5F | 0.036 |
| Tritanopia (no blue cones) | #004D4F | 0.040 |
| Achromatopsia (no color) | #424242 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15475F
#15475F
oklch(37.7% 0.066 233.5)
- #5D371D
#5D371D
oklch(37.7% 0.067 53.6)
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 #15475F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.018
- Charcoal #264653 ΔE 0.023
- Dark Teal #014D4E ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.043
- Midnight Green #073B4C ΔE 0.049
- Deep Teal #00555A ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.050
- Twilight Blue #0A437A ΔE 0.051
Use #15475F 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.