#0642A3
Closest named color: Sapphire (#2138AB). oklch(41.2% 0.167 260.7), rgb(6, 66, 163).
Aa
White text reads best on this color (9.06:1).
About this color
#0642A3 is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.167 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.028 away. White text reads best on it, at 9.06:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.31:1 |
| White text | 9.06:1 |
Values
| HEX | #0642A3 |
| RGB | rgb(6, 66, 163) |
| HSL | hsl(217, 93%, 33%) |
| OKLCH | oklch(41.2% 0.167 260.7) |
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 #0642A3 | 9.06:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #0642A3 | 2.31:1 | Fails | Lc 13.9 | Not readable |
| #0642A3 text on white | 9.06:1 | AAA | Lc 90.0 | Preferred for body text |
| #0642A3 text on black | 2.31:1 | Fails | Lc -12.2 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DAFE
oklch(88.4% 0.055 261.2)
-
Step 300
300
#9DC2FF
oklch(81% 0.096 260.2)
-
Step 400
400
#679FFF
oklch(70.7% 0.153 260.6)
-
Step 500
500
#3C83FF
oklch(63.2% 0.198 260.7)
-
Step 600
600
#1768EF
oklch(55.6% 0.217 260.7)
-
Step 700
700
#0755D0
oklch(49% 0.202 260.7)
-
Step 800
800 (this color)
#0642A3
oklch(41.2% 0.167 260.7)
-
Step 900
900
#133D85
oklch(37.7% 0.13 260.6)
-
Step 950
950
#0D244E
oklch(27% 0.083 261.2)
#0642A3 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) | #0050A6 | 0.037 |
| Deuteranopia (no green cones) | #0042A1 | 0.004 |
| Tritanopia (no blue cones) | #005B6C | 0.126 |
| Achromatopsia (no color) | #494949 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0642A3
#0642A3
oklch(41.2% 0.167 260.7)
- #624500
#624500
oklch(41.2% 0.085 81.2)
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 #0642A3, closest first.
No curated palette has a color within ΔE 0.04 of #0642A3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.028
- Cobalt #1E488F ΔE 0.040
- Blue Blue #2242C7 ΔE 0.061
- Blueberry #464196 ΔE 0.066
- Dusk Blue #26538D ΔE 0.067
- Light Navy #155084 ΔE 0.068
- Twilight Blue #0A437A ΔE 0.069
- Dark Slate Blue #483D8B ΔE 0.076
Use #0642A3 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.