#315E79
Closest named color: YInMn Blue (#415A77). oklch(46.2% 0.066 236.9), rgb(49, 94, 121).
Aa
White text reads best on this color (6.98:1).
About this color
#315E79 is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.066 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.020 away. White text reads best on it, at 6.98:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.00:1 |
| White text | 6.98:1 |
Values
| HEX | #315E79 |
| RGB | rgb(49, 94, 121) |
| HSL | hsl(203, 42%, 33%) |
| OKLCH | oklch(46.2% 0.066 236.9) |
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 #315E79 | 6.98:1 | AA | Lc -89.0 | Fine for body text |
| Black text on #315E79 | 3.00:1 | AA large text | Lc 20.0 | Dividers and decoration only |
| #315E79 text on white | 6.98:1 | AA | Lc 84.0 | Fine for body text |
| #315E79 text on black | 3.00:1 | AA large text | Lc -17.9 | 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
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE4
oklch(88.5% 0.018 240)
-
Step 300
300
#AEC4D3
oklch(80.8% 0.032 237.7)
-
Step 400
400
#83A6BD
oklch(70.7% 0.051 237.2)
-
Step 500
500
#6290AC
oklch(63.1% 0.065 235.9)
-
Step 600
600
#487A98
oklch(55.7% 0.071 236.4)
-
Step 700
700 (this color)
#315E79
oklch(46.2% 0.066 236.9)
-
Step 800
800
#305469
oklch(42.8% 0.054 235.6)
-
Step 900
900
#2B4556
oklch(37.7% 0.043 238.1)
-
Step 950
950
#192932
oklch(27.1% 0.027 233.8)
#315E79 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) | #515D7A | 0.039 |
| Deuteranopia (no green cones) | #485679 | 0.034 |
| Tritanopia (no blue cones) | #006567 | 0.050 |
| Achromatopsia (no color) | #595959 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315E79
#315E79
oklch(46.2% 0.066 236.9)
- #754F32
#754F32
oklch(46.3% 0.067 57.5)
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 #315E79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.020
- Light Navy Blue #2E5A88 ΔE 0.031
- Denim #3B638C ΔE 0.035
- Petrol #005F6A ΔE 0.040
- Dusty Grape #545775 ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.047
- Slate #516572 ΔE 0.048
- Dusk #4E5481 ΔE 0.049
Use #315E79 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.