#21608D
Closest named color: Light Navy Blue (#2E5A88). oklch(47.1% 0.096 243.9), rgb(33, 96, 141).
Aa
White text reads best on this color (6.72:1).
About this color
#21608D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.096 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.019 away. White text reads best on it, at 6.72:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #21608D |
| RGB | rgb(33, 96, 141) |
| HSL | hsl(205, 62%, 34%) |
| OKLCH | oklch(47.1% 0.096 243.9) |
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 #21608D | 6.72:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #21608D | 3.12:1 | AA large text | Lc 21.2 | Dividers and decoration only |
| #21608D text on white | 6.72:1 | AA | Lc 82.9 | Fine for body text |
| #21608D text on black | 3.12:1 | AA large text | Lc -19.1 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CBDCE9
oklch(88.6% 0.026 240.7)
-
Step 300
300
#A8C5DD
oklch(81% 0.046 243.3)
-
Step 400
400
#78A6CC
oklch(70.6% 0.075 244)
-
Step 500
500
#5390BF
oklch(63.2% 0.095 243.4)
-
Step 600
600
#3679AB
oklch(55.6% 0.103 243.9)
-
Step 700
700 (this color)
#21608D
oklch(47.1% 0.096 243.9)
-
Step 800
800
#225377
oklch(42.6% 0.08 243.6)
-
Step 900
900
#224560
oklch(37.7% 0.062 243.8)
-
Step 950
950
#152838
oklch(26.9% 0.039 245.4)
#21608D 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) | #4B618F | 0.043 |
| Deuteranopia (no green cones) | #3C578C | 0.033 |
| Tritanopia (no blue cones) | #006B70 | 0.068 |
| Achromatopsia (no color) | #5C5C5C | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21608D
#21608D
oklch(47.1% 0.096 243.9)
- #804E14
#804E14
oklch(47.2% 0.096 64.4)
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 #21608D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.019
- Peacock Blue #016795 ΔE 0.023
- Denim #3B638C ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.028
- Dusk Blue #26538D ΔE 0.039
- Dusky Blue #475F94 ΔE 0.040
- YInMn Blue #415A77 ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.044
Use #21608D 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.