#4670AB
Closest named color: Flat Blue (#3C73A8). oklch(54.2% 0.104 257.1), rgb(70, 112, 171).
Aa
White text reads best on this color (5.04:1).
About this color
#4670AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.104 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.014 away. White text reads best on it, at 5.04:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.16:1 |
| White text | 5.04:1 |
Values
| HEX | #4670AB |
| RGB | rgb(70, 112, 171) |
| HSL | hsl(215, 42%, 47%) |
| OKLCH | oklch(54.2% 0.104 257.1) |
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 #4670AB | 5.04:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #4670AB | 4.16:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #4670AB text on white | 5.04:1 | AA | Lc 74.7 | Content text, not long reading |
| #4670AB text on black | 4.16:1 | AA large text | Lc -27.0 | 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 600.
-
Step 50
50
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#AEC2DF
oklch(80.8% 0.047 257.6)
-
Step 400
400
#83A3CF
oklch(70.8% 0.074 256.4)
-
Step 500
500
#638BC3
oklch(63.1% 0.096 256.9)
-
Step 600
600 (this color)
#4670AB
oklch(54.2% 0.104 257.1)
-
Step 700
700
#3B6197
oklch(49% 0.097 257.3)
-
Step 800
800
#31507A
oklch(42.8% 0.079 256.4)
-
Step 900
900
#2B4262
oklch(37.6% 0.062 256.8)
-
Step 950
950
#1A273A
oklch(27% 0.04 257.8)
#4670AB 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) | #5874AD | 0.025 |
| Deuteranopia (no green cones) | #4A6AAA | 0.017 |
| Tritanopia (no blue cones) | #007D85 | 0.090 |
| Achromatopsia (no color) | #6F6F6F | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4670AB
#4670AB
oklch(54.2% 0.104 257.1)
- #916618
#916618
oklch(54.2% 0.104 76.9)
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 #4670AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.014
- French Blue #436BAD ΔE 0.016
- Muted Blue #3B719F ΔE 0.024
- Dull Blue #49759C ΔE 0.031
- Windows Blue #3778BF ΔE 0.035
- Mid Blue #276AB3 ΔE 0.037
- Nice Blue #107AB0 ΔE 0.040
- Cerulean #457B9D ΔE 0.044
Use #4670AB 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.