#304E6F
Closest named color: Light Navy (#155084). oklch(41.6% 0.066 251.8), rgb(48, 78, 111).
Aa
White text reads best on this color (8.58:1).
About this color
#304E6F is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.066 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.039 away. White text reads best on it, at 8.58:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.44:1 |
| White text | 8.58:1 |
Values
| HEX | #304E6F |
| RGB | rgb(48, 78, 111) |
| HSL | hsl(211, 40%, 31%) |
| OKLCH | oklch(41.6% 0.066 251.8) |
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 #304E6F | 8.58:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #304E6F | 2.44:1 | Fails | Lc 14.6 | Not readable |
| #304E6F text on white | 8.58:1 | AAA | Lc 89.4 | Fine for body text |
| #304E6F text on black | 2.44:1 | Fails | Lc -12.8 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#CFDAE7
oklch(88.4% 0.022 252.5)
-
Step 300
300
#AFC3D9
oklch(80.9% 0.038 250.8)
-
Step 400
400
#85A4C7
oklch(70.8% 0.062 251.8)
-
Step 500
500
#668DB8
oklch(63.2% 0.078 251.5)
-
Step 600
600
#4C76A4
oklch(55.5% 0.086 251.7)
-
Step 700
700
#3D638D
oklch(49% 0.081 252)
-
Step 800
800 (this color)
#304E6F
oklch(41.6% 0.066 251.8)
-
Step 900
900
#2D435C
oklch(37.6% 0.051 252.3)
-
Step 950
950
#1B2836
oklch(27.2% 0.032 250.9)
#304E6F 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) | #414F70 | 0.023 |
| Deuteranopia (no green cones) | #38496E | 0.017 |
| Tritanopia (no blue cones) | #09565A | 0.058 |
| Achromatopsia (no color) | #4C4C4C | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304E6F
#304E6F
oklch(41.6% 0.066 251.8)
- #624620
#624620
oklch(41.6% 0.066 72.6)
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 #304E6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.040
- YInMn Blue #415A77 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.049
- Dusk Blue #26538D ΔE 0.049
- Charcoal #264653 ΔE 0.052
- Dusk #4E5481 ΔE 0.055
Use #304E6F 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.