#3A617F
Closest named color: Denim (#3B638C). oklch(47.7% 0.066 243), rgb(58, 97, 127).
Aa
White text reads best on this color (6.57:1).
About this color
#3A617F is a medium-dark, muted blue. In OKLCH its lightness is 48%, its chroma 0.066 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.021 away. White text reads best on it, at 6.57:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.19:1 |
| White text | 6.57:1 |
Values
| HEX | #3A617F |
| RGB | rgb(58, 97, 127) |
| HSL | hsl(206, 37%, 36%) |
| OKLCH | oklch(47.7% 0.066 243) |
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 #3A617F | 6.57:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #3A617F | 3.19:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #3A617F text on white | 6.57:1 | AA | Lc 82.4 | Fine for body text |
| #3A617F text on black | 3.19:1 | AA large text | Lc -19.5 | 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
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#D0DBE4
oklch(88.6% 0.017 242.5)
-
Step 300
300
#B0C4D4
oklch(81% 0.031 242.1)
-
Step 400
400
#86A5BE
oklch(70.7% 0.05 242.8)
-
Step 500
500
#678EAE
oklch(63% 0.065 243.8)
-
Step 600
600
#4D789A
oklch(55.5% 0.071 243.4)
-
Step 700
700 (this color)
#3A617F
oklch(47.7% 0.066 243)
-
Step 800
800
#33536B
oklch(42.8% 0.055 242.1)
-
Step 900
900
#2D4457
oklch(37.6% 0.044 244.2)
-
Step 950
950
#1B2833
oklch(27% 0.027 244.6)
#3A617F 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) | #546180 | 0.033 |
| Deuteranopia (no green cones) | #4B5A7E | 0.027 |
| Tritanopia (no blue cones) | #12686B | 0.054 |
| Achromatopsia (no color) | #5D5D5D | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A617F
#3A617F
oklch(47.7% 0.066 243)
- #775434
#775434
oklch(47.6% 0.066 62.6)
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 #3A617F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.021
- YInMn Blue #415A77 ΔE 0.022
- Light Navy Blue #2E5A88 ΔE 0.032
- Slate #516572 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.040
- Dusky Blue #475F94 ΔE 0.041
- Dusty Grape #545775 ΔE 0.041
- Peacock Blue #016795 ΔE 0.044
Use #3A617F 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.