#21475F
Closest named color: Dark Grey Blue (#29465B). oklch(38.1% 0.06 238.7), rgb(33, 71, 95).
Aa
White text reads best on this color (9.85:1).
About this color
#21475F is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.060 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.010 away. White text reads best on it, at 9.85:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.13:1 |
| White text | 9.85:1 |
Values
| HEX | #21475F |
| RGB | rgb(33, 71, 95) |
| HSL | hsl(203, 48%, 25%) |
| OKLCH | oklch(38.1% 0.06 238.7) |
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 #21475F | 9.85:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #21475F | 2.13:1 | Fails | Lc 11.2 | Not readable |
| #21475F text on white | 9.85:1 | AAA | Lc 92.7 | Preferred for body text |
| #21475F text on black | 2.13:1 | Fails | Lc -9.8 | 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 900.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CBDCE8
oklch(88.5% 0.025 238.4)
-
Step 300
300
#A7C5DB
oklch(80.8% 0.045 239.9)
-
Step 400
400
#76A7C9
oklch(70.6% 0.072 239.4)
-
Step 500
500
#5091BB
oklch(63.1% 0.092 238.9)
-
Step 600
600
#317BA7
oklch(55.7% 0.1 238.5)
-
Step 700
700
#23678F
oklch(49% 0.093 238.9)
-
Step 800
800
#1F5474
oklch(42.6% 0.077 238.9)
-
Step 900
900 (this color)
#21475F
oklch(38.1% 0.06 238.7)
-
Step 950
950
#142937
oklch(27% 0.038 239.4)
#21475F 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) | #3C4760 | 0.033 |
| Deuteranopia (no green cones) | #34405F | 0.030 |
| Tritanopia (no blue cones) | #004D4F | 0.044 |
| Achromatopsia (no color) | #434343 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21475F
#21475F
oklch(38.1% 0.06 238.7)
- #5A3A21
#5A3A21
oklch(38% 0.059 57.7)
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 #21475F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.010
- Charcoal #264653 ΔE 0.020
- Dark Blue Grey #1F3B4D ΔE 0.045
- Dark Teal #014D4E ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.046
- Deep Teal #00555A ΔE 0.050
- Twilight Blue #0A437A ΔE 0.053
- Midnight Green #073B4C ΔE 0.054
Use #21475F 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.