#0644A2
Closest named color: Sapphire (#2138AB). oklch(41.5% 0.163 260.1), rgb(6, 68, 162).
Aa
White text reads best on this color (8.91:1).
About this color
#0644A2 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.163 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.032 away. White text reads best on it, at 8.91:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.35:1 |
| White text | 8.91:1 |
Values
| HEX | #0644A2 |
| RGB | rgb(6, 68, 162) |
| HSL | hsl(216, 93%, 33%) |
| OKLCH | oklch(41.5% 0.163 260.1) |
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 #0644A2 | 8.91:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #0644A2 | 2.35:1 | Fails | Lc 14.3 | Not readable |
| #0644A2 text on white | 8.91:1 | AAA | Lc 89.6 | Fine for body text |
| #0644A2 text on black | 2.35:1 | Fails | Lc -12.6 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DAFD
oklch(88.4% 0.054 260.6)
-
Step 300
300
#9DC2FF
oklch(81% 0.096 260.2)
-
Step 400
400
#669FFE
oklch(70.6% 0.152 260.1)
-
Step 500
500
#3B84FD
oklch(63.2% 0.195 260)
-
Step 600
600
#1569EC
oklch(55.6% 0.212 260.1)
-
Step 700
700
#0557CD
oklch(49.2% 0.196 260)
-
Step 800
800 (this color)
#0644A2
oklch(41.5% 0.163 260.1)
-
Step 900
900
#133D83
oklch(37.6% 0.127 260.2)
-
Step 950
950
#0C254D
oklch(27.1% 0.08 259.5)
#0644A2 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) | #0051A5 | 0.034 |
| Deuteranopia (no green cones) | #0043A0 | 0.005 |
| Tritanopia (no blue cones) | #005C6C | 0.124 |
| Achromatopsia (no color) | #4A4A4A | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0644A2
#0644A2
oklch(41.5% 0.163 260.1)
- #644500
#644500
oklch(41.4% 0.086 79.4)
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 #0644A2, closest first.
No curated palette has a color within ΔE 0.04 of #0644A2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.032
- Cobalt #1E488F ΔE 0.036
- Dusk Blue #26538D ΔE 0.062
- Blue Blue #2242C7 ΔE 0.062
- Light Navy #155084 ΔE 0.063
- Blueberry #464196 ΔE 0.064
- Twilight Blue #0A437A ΔE 0.067
- Deep Sea Blue #015482 ΔE 0.074
Use #0644A2 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.