#064F74
Closest named color: Deep Sea Blue (#015482). oklch(40.7% 0.089 239), rgb(6, 79, 116).
Aa
White text reads best on this color (8.82:1).
About this color
#064F74 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.089 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.025 away. White text reads best on it, at 8.82:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.37:1 |
| White text | 8.82:1 |
Values
| HEX | #064F74 |
| RGB | rgb(6, 79, 116) |
| HSL | hsl(200, 90%, 24%) |
| OKLCH | oklch(40.7% 0.089 239) |
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 #064F74 | 8.82:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #064F74 | 2.37:1 | Fails | Lc 14.2 | Not readable |
| #064F74 text on white | 8.82:1 | AAA | Lc 89.7 | Fine for body text |
| #064F74 text on black | 2.37:1 | Fails | Lc -12.5 | 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 800.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A3C6DF
oklch(80.9% 0.052 239.4)
-
Step 400
400
#6EA8CF
oklch(70.7% 0.083 239)
-
Step 500
500
#4492C3
oklch(63.2% 0.106 239.2)
-
Step 600
600
#1C7BAF
oklch(55.5% 0.116 239.1)
-
Step 700
700
#0A6896
oklch(49.2% 0.107 238.4)
-
Step 800
800 (this color)
#064F74
oklch(40.7% 0.089 239)
-
Step 900
900
#174662
oklch(37.6% 0.069 238.8)
-
Step 950
950
#0F2939
oklch(26.9% 0.044 238.4)
#064F74 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) | #3D4F76 | 0.046 |
| Deuteranopia (no green cones) | #2F4673 | 0.037 |
| Tritanopia (no blue cones) | #00585C | 0.057 |
| Achromatopsia (no color) | #4A4A4A | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #064F74
#064F74
oklch(40.7% 0.089 239)
- #6C3C0C
#6C3C0C
oklch(40.7% 0.089 59.4)
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 #064F74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.025
- Light Navy #155084 ΔE 0.029
- Twilight Blue #0A437A ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.047
- Dusk Blue #26538D ΔE 0.049
- Deep Teal #00555A ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.055
- Cobalt #1E488F ΔE 0.055
Use #064F74 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.