#064B76
Closest named color: Twilight Blue (#0A437A). oklch(39.8% 0.095 244.1), rgb(6, 75, 118).
Aa
White text reads best on this color (9.22:1).
About this color
#064B76 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.095 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.026 away. White text reads best on it, at 9.22:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.27:1 |
| White text | 9.22:1 |
Values
| HEX | #064B76 |
| RGB | rgb(6, 75, 118) |
| HSL | hsl(203, 90%, 24%) |
| OKLCH | oklch(39.8% 0.095 244.1) |
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 #064B76 | 9.22:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #064B76 | 2.27:1 | Fails | Lc 13.2 | Not readable |
| #064B76 text on white | 9.22:1 | AAA | Lc 90.8 | Preferred for body text |
| #064B76 text on black | 2.27:1 | Fails | Lc -11.5 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C4DDF2
oklch(88.6% 0.039 243.5)
-
Step 300
300
#9AC6EC
oklch(80.8% 0.071 244.9)
-
Step 400
400
#5DA8E2
oklch(70.7% 0.114 243.7)
-
Step 500
500
#2090DA
oklch(63% 0.146 244.3)
-
Step 600
600
#0079BD
oklch(55.5% 0.138 244.2)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900 (this color)
#064B76
oklch(39.8% 0.095 244.1)
-
Step 950
950
#052941
oklch(27% 0.06 243.1)
#064B76 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) | #364D78 | 0.040 |
| Deuteranopia (no green cones) | #274375 | 0.030 |
| Tritanopia (no blue cones) | #00565B | 0.066 |
| Achromatopsia (no color) | #474747 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #064B76
#064B76
oklch(39.8% 0.095 244.1)
- #683B00
#683B00
oklch(39.9% 0.09 64.3)
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 #064B76, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.026
- Light Navy #155084 ΔE 0.028
- Deep Sea Blue #015482 ΔE 0.031
- Cobalt #1E488F ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.048
- Dusk Blue #26538D ΔE 0.050
- Charcoal #264653 ΔE 0.059
- Marine Blue #01386A ΔE 0.060
Use #064B76 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.