#33709B
Closest named color: Muted Blue (#3B719F). oklch(52.4% 0.093 242.2), rgb(51, 112, 155).
Aa
White text reads best on this color (5.34:1).
About this color
#33709B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.093 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.010 away. White text reads best on it, at 5.34:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.93:1 |
| White text | 5.34:1 |
Values
| HEX | #33709B |
| RGB | rgb(51, 112, 155) |
| HSL | hsl(205, 50%, 40%) |
| OKLCH | oklch(52.4% 0.093 242.2) |
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 #33709B | 5.34:1 | AA | Lc -81.7 | Fine for body text |
| Black text on #33709B | 3.93:1 | AA large text | Lc 27.7 | Dividers and decoration only |
| #33709B text on white | 5.34:1 | AA | Lc 76.4 | Fine for body text |
| #33709B text on black | 3.93:1 | AA large text | Lc -25.4 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDBE7
oklch(88.4% 0.023 241.9)
-
Step 300
300
#AAC5DA
oklch(81% 0.042 241.5)
-
Step 400
400
#7CA6C7
oklch(70.7% 0.067 242.5)
-
Step 500
500
#5990B9
oklch(63.2% 0.085 242.1)
-
Step 600
600 (this color)
#33709B
oklch(52.4% 0.093 242.2)
-
Step 700
700
#2E668D
oklch(49.1% 0.086 241.9)
-
Step 800
800
#285373
oklch(42.7% 0.072 243.1)
-
Step 900
900
#25455D
oklch(37.7% 0.056 242.6)
-
Step 950
950
#162936
oklch(27.1% 0.035 239.7)
#33709B 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) | #5D719D | 0.046 |
| Deuteranopia (no green cones) | #4E669A | 0.037 |
| Tritanopia (no blue cones) | #007B7F | 0.068 |
| Achromatopsia (no color) | #6B6B6B | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33709B
#33709B
oklch(52.4% 0.093 242.2)
- #905D2C
#905D2C
oklch(52.4% 0.093 62.1)
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 #33709B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.010
- Ocean Blue #03719C ΔE 0.022
- Flat Blue #3C73A8 ΔE 0.024
- Sea Blue #047495 ΔE 0.027
- Dull Blue #49759C ΔE 0.028
- Metallic Blue #4F738E ΔE 0.037
- French Blue #436BAD ΔE 0.038
- Cerulean #457B9D ΔE 0.039
Use #33709B 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.