#064D73
Closest named color: Deep Sea Blue (#015482). oklch(40.1% 0.089 240.3), rgb(6, 77, 115).
Aa
White text reads best on this color (9.06:1).
About this color
#064D73 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.089 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.030 away. White text reads best on it, at 9.06:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.31:1 |
| White text | 9.06:1 |
Values
| HEX | #064D73 |
| RGB | rgb(6, 77, 115) |
| HSL | hsl(201, 90%, 24%) |
| OKLCH | oklch(40.1% 0.089 240.3) |
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 #064D73 | 9.06:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #064D73 | 2.31:1 | Fails | Lc 13.6 | Not readable |
| #064D73 text on white | 9.06:1 | AAA | Lc 90.4 | Preferred for body text |
| #064D73 text on black | 2.31:1 | Fails | Lc -11.9 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C4DDF0
oklch(88.5% 0.037 240.7)
-
Step 300
300
#9AC7E8
oklch(80.9% 0.067 240.4)
-
Step 400
400
#5DA9DD
oklch(70.7% 0.107 240.5)
-
Step 500
500
#1D92D3
oklch(63% 0.137 240.3)
-
Step 600
600
#007BB6
oklch(55.6% 0.128 240.2)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800
#00547F
oklch(42.6% 0.099 240.7)
-
Step 900
900 (this color)
#064D73
oklch(40.1% 0.089 240.3)
-
Step 950
950
#05293F
oklch(26.9% 0.057 240.8)
#064D73 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) | #3B4E75 | 0.045 |
| Deuteranopia (no green cones) | #2C4472 | 0.035 |
| Tritanopia (no blue cones) | #00575A | 0.061 |
| Achromatopsia (no color) | #494949 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #064D73
#064D73
oklch(40.1% 0.089 240.3)
- #6A3A07
#6A3A07
oklch(40% 0.09 59.8)
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 #064D73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.030
- Light Navy #155084 ΔE 0.031
- Twilight Blue #0A437A ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.044
- Dusk Blue #26538D ΔE 0.052
- Cobalt #1E488F ΔE 0.054
- Charcoal #264653 ΔE 0.055
- Deep Teal #00555A ΔE 0.056
Use #064D73 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.