#4B6B8A
Closest named color: Metallic Blue (#4F738E). oklch(51.6% 0.062 248.3), rgb(75, 107, 138).
Aa
White text reads best on this color (5.57:1).
About this color
#4B6B8A is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.062 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.024 away. White text reads best on it, at 5.57:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #4B6B8A |
| RGB | rgb(75, 107, 138) |
| HSL | hsl(210, 30%, 42%) |
| OKLCH | oklch(51.6% 0.062 248.3) |
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 #4B6B8A | 5.57:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #4B6B8A | 3.76:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #4B6B8A text on white | 5.57:1 | AA | Lc 77.8 | Fine for body text |
| #4B6B8A text on black | 3.76:1 | AA large text | Lc -24.0 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EAEF
oklch(93.5% 0.009 247.9)
-
Step 200
200
#D1DAE4
oklch(88.4% 0.017 250.9)
-
Step 300
300
#B2C3D4
oklch(81% 0.03 248.2)
-
Step 400
400
#8AA4BE
oklch(70.8% 0.048 248.5)
-
Step 500
500
#6C8DAD
oklch(63.1% 0.061 248)
-
Step 600
600
#547799
oklch(55.7% 0.067 248.4)
-
Step 700
700 (this color)
#4B6B8A
oklch(51.6% 0.062 248.3)
-
Step 800
800
#38526A
oklch(42.8% 0.051 247.1)
-
Step 900
900
#314456
oklch(37.8% 0.039 247.5)
-
Step 950
950
#1D2832
oklch(27.1% 0.024 246.3)
#4B6B8A 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) | #5F6C8B | 0.027 |
| Deuteranopia (no green cones) | #576589 | 0.022 |
| Tritanopia (no blue cones) | #327275 | 0.053 |
| Achromatopsia (no color) | #686868 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B6B8A
#4B6B8A
oklch(51.6% 0.062 248.3)
- #7F6140
#7F6140
oklch(51.5% 0.061 68.4)
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 #4B6B8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.024
- Denim #3B638C ΔE 0.033
- Muted Blue #3B719F ΔE 0.035
- Dull Blue #49759C ΔE 0.035
- Slate #516572 ΔE 0.038
- Dusky Blue #475F94 ΔE 0.044
- Flat Blue #3C73A8 ΔE 0.048
- Sea Blue #047495 ΔE 0.048
Use #4B6B8A 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.